Limp Mode Fail Strikes Again!

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[MetalsGeek]

This may be way off, but came to my mind after reading through the printouts of errors that FORScan produced. These trucks (and most other modern vehicles) have multiple computer systems that communicate to each other. Looks like a major breakdown in communication is happening between at least a couple of systems. Maybe a loose or faulty connector somewhere? I have also seen online where a truck (in this case a 2022 Doge Ram 1500) would run for approx 20 min and then go into limp mode and pretty much disable the truck. Wait a period of time and the truck would start up and run fine, for another 20 min then do the same thing. Through days of troubleshooting the mechanic discovered there was a faulty connector between the BCM and ECU. This particular connector had a tiny resister for each pin in the plug. After 20 minutes the resister on one of the pins in the plug from the BCM was overheating and malfunctioning. The faulty resister was causing "data" not to be transferred on that one wire. That's all it took to disable the entire vehicle after 20 minutes of driving. Have no idea if any of the connectors in the Maverick have resisters?? Just thinking outside the box. If anything it appears that the recall update for the BCM is affecting hybrids way more and possibly corrupting data that the different systems use to communicate.

The problem described in this post most certainly has the smell of a network failure. I believe that all CAN buses have a 120-ohm termination resistor at each end of the network line. You can often verify this with a DVM (should read 60 ohms) thru the OBD connector AFTER system power has been shut down, but wiring diagrams are needed to isolate any faults. I cannot imagine that the resistor(s) are overheating, but they certainly could have a bad connection. Here's a good video that describes the situation.

 

[Old Fart]

I appreciate the work that you have put into this serious issue, my 22 Mav XLT went into limp mode 3X this weekend first while TOWING ON I-95, then twice while TOWING on the back roads home because of being afraid to get on the interstate again. TURD has already had my truck for an afternoon after they towed it in and burned a ¹/⁴ tank of gas trying to get it to happen again.

I'm really getting PO'd by their lack of concern for our safety.

 

[KevCuRaoi]

I am shocked there isn't a recall for the recall or any type of acknowledgement from Ford regarding this issue.

Someone somewhere said they released a update last week but no further details and it was likely a dealer telling someone that just to tell them it was "fixed".

Dealer should be able to tell if there is a software update available.... If there is a newer update available than your Maverick currently has after the recalls..... then that most likely will be the "fix".

I did check Ford Tech Hotline assistance for this issue..... Ford engineers have said that there are software updates that should fix the concern (as of late March/early April).

 

[KevCuRaoi]

Well, this has now happened to me three times in a row, and quite honestly I wish Ford would give us something solid to go off of, especially for those of us who don't have the luxury of dropping off the truck for an extended period of time at a Ford dealer.

So, the symptoms - start driving, and the truck suddenly throws a barrage of errors - ESC fails, gear selection at low speed message, hill assist disable, pre-collision assist disabled, ABS light is on, MIL is on, service wrench is on, and drive mode selection is disabled. Might be something else in there that's disabled, but you get the gist. Truck loses all response to gas pedal, slows down and then slams on the parking brake at like 1-2 mph. Taking the parking brake off, you have no gas pedal input and the truck just accelerates up to 30-35 mph (don't know the exact number, because every time this has happened to be the speed limit was 30 or less so I ended up just riding the brakes to keep the speed down).

The only benefit here, and why I'm also making this post, is to share that there is a bit of a workaround so you're not completely stranded in a garbage situation. And we'll get to that here in a minute.

At least with the fail this time I had my laptop with me, so fired up FORScan and managed to get a complete system read of all the failures in real time. So here's the fail right after it happened (luckily I was in a parking lot, so was able to pull immediately over into some open spots):

First capture at 20240405 1518z

===SOBDMC DTC U1011:86-AF===
Code: U1011 - Invalid Internal Control Module Monitoring Data Received from ECM/PCM

Additional Fault Symptom (:86):
- Signal Invalid

Status (-AF):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Secondary OBD Control Module C

Freeze Frame  #1:
-EVENT_TIME: 42662823 s (Fri Apr 05 16:15:17 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 15.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 66 °F - Outside temperature
-ENG_TQ: 0.4 ft·lb - Engine Torque
-PRNDL_T: N  - Shift Position
-TFT: 70 °F - Transmission Fluid Temperature
-M_SPEED: 752 1/min - Motor Speed
-GTQ_CMD: 0.0 ft·lb - Generator Torque Command
-MTQ_CMD: 0.0 ft·lb - Motor Torque Command
-M_INV_V: 222.90 V - Motor Inverter Voltage
-G_PHTMP: 70 °F - Generator Inverter Phase Temperature
-MCLTEMP: 79 °F - Motor Coil Temperature
-GCLTEMP: 81 °F - Generator Coil Temperature
-G_SPEED: -749 1/min - Generator Speed
-TQ_DSD: 0.0 ft·lb - Desired Total Torque
-M_PHTMP: 86 °F - Motor Inverter Phase Temperature
-VEHMODE: Driving  - Vehicle Control Mode
-ECU_ONTIME: 64 min - Module On Time since Key On or Reset
-ECT: 115 °F - Engine coolant temperature
-CTO: 0 1/min - Tachometer signal output
-HV_AMP: 1.60 A - High Voltage Battery Current
-HVBAT_V: 222.50 V - High Voltage Battery Voltage
-APP: 9.00 % - Accelerator Pedal Position
-VPWR: 14.64 V - Control Module Voltage
-VS: 6.1 mph - Vehicle Speed
===END SOBDMC DTC U1011:86-AF===

===SOBDMC DTC U1028:00-26===
Code: U1028 - ABS Control Module Received Invalid Data from ECM/PCM 'A'

Status (-26):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Secondary OBD Control Module C

===END SOBDMC DTC U1028:00-26===

===BECM DTC None===
Successful DTC reading, no error codes found

Module: Battery Energy Control Module

===END BECM DTC None===

===PCM DTC U1010:00-AF===
Code: U1010 - Invalid Internal Control Module Monitoring Data Received from Hybrid Powertrain Control Module

Status (-AF):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Powertrain Control Module

Freeze Frame  #1:

Freeze Frame  #2:
-EVENT_TIME: 42662822 s (Fri Apr 05 16:15:16 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-FUELSYS: error  - Fuel System Status (Open/Closed Loop)
-LOAD: 0.00 % - Calculated Load Value
-ECT: 115 °F - Engine coolant temperature
-SHRTFT1: 0.00 % - Short term fuel trim 1
-LONGFT1: -3.91 % - Long term fuel trim 1
-MAP: 14.5 psi - Manifold absolute pressure sensor
-RPM: 0 1/min - Engine Revolutions Per Minute
-VSS: 6.2 mph - Vehicle Speed
-SPARKADV: 0.00 ° - Spark Advance
-IAT: 68 °F - Intake Air Temperature
-RUNTM: 104 s - Time Since Engine Start
-EVAP_PCT: 0.00 % - Commanded Evaporative Purge
-BARO: 14.5 psi - Barometric pressure
-VPWR: 14.89 V - Control Module Voltage
-TP_REL: 7.84 % - Relative Throttle Position
-TAC_PCT: 9.41 % - Commanded Throttle Actuator Control
-EVAP_VP: 1.7 psi - Evaporative System Vapor Pressure
===END PCM DTC U1010:00-AF===

===OBDII DTC U1011-P===
Code: U1011 - Invalid Internal Control Module Monitoring Data Received from ECM/PCM

Status (-50):
- Pending - malfunction is expected to be confirmed

Module: On Board Diagnostic II

===END OBDII DTC U1011-P===

===PACM DTC None===
Successful DTC reading, no error codes found

Module: Pedestrian Alert Control Module

===END PACM DTC None===

===DCDC DTC None===
Successful DTC reading, no error codes found

Module: DC to DC Converter Control Module

===END DCDC DTC None===

===BdyCM DTC B1444:15-08===
Code: B1444 - Left Rear Stop/Position Lamp Output

Additional Fault Symptom (:15):
- Circuit Short To Battery Or Open

Status (-08):
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC B1444:15-08===

===BdyCM DTC B1448:15-08===
Code: B1448 - Right Rear Stop/Position Lamp Output

Additional Fault Symptom (:15):
- Circuit Short To Battery Or Open

Status (-08):
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Body Control Module

===END BdyCM DTC B1448:15-08===

===BECMB DTC None===
Successful DTC reading, no error codes found

Module: Battery Energy Control Module B

===END BECMB DTC None===

===BCM_C DTC None===
Successful DTC reading, no error codes found

Module: Body Control Module C

===END BCM_C DTC None===

===TRM DTC None===
Successful DTC reading, no error codes found

Module: Trailer Module

===END TRM DTC None===

===OCS DTC None===
Successful DTC reading, no error codes found

Module: Occupant Classification System Module

===END OCS DTC None===

===ABS DTC U0401:00-2F===
Code: U0401 - Invalid Data Received from ECM/PCM A

Status (-2F):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Antilock braking system

Freeze Frame  #1:
-EVENT_TIME: 42662822 s (Fri Apr 05 16:15:16 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 14.8 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 64 °F - Outside temperature
===END ABS DTC U0401:00-2F===

===ABS DTC U0131:00-2E===
Code: U0131 - Lost Communication With Power Steering Control Module 'A'

Status (-2E):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Antilock braking system

Freeze Frame  #1:
-EVENT_TIME: 42662822 s (Fri Apr 05 16:15:16 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 14.8 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 64 °F - Outside temperature
===END ABS DTC U0131:00-2E===

===TCU DTC None===
Successful DTC reading, no error codes found

Module: Telematic Control Unit Module

===END TCU DTC None===

===RCM DTC None===
Successful DTC reading, no error codes found

Module: Restraint Control Module

===END RCM DTC None===

===HVAC DTC None===
Successful DTC reading, no error codes found

Module: Heating Ventilation Air Conditioning

===END HVAC DTC None===

===GSM DTC None===
Successful DTC reading, no error codes found

Module: Gear Shift Module

===END GSM DTC None===

===PSCM DTC None===
Successful DTC reading, no error codes found

Module: Power Steering Control Module

===END PSCM DTC None===

===ACM DTC U0255:00-28===
Code: U0255 - Lost Communication With Front Display Interface Module

Status (-28):
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Audio Control Module

Freeze Frame  #1:
-EVENT_TIME: 42567147 s (Thu Apr 04 13:40:41 2024) - Event time
-TOTAL_DISTANCE: 15883 miles - Total Distance
-ELEC_POE_STAS: Not Received  - Electric Power Status
-ING_STAS: Run  - Ignition Status
-POW_TOR_STAS: Powerpack Start In Progress Torque NA  - Powerpack Torque Status
===END ACM DTC U0255:00-28===

===SCCM DTC None===
Successful DTC reading, no error codes found

Module: Steering Column Control Module

===END SCCM DTC None===

===IPC DTC None===
Successful DTC reading, no error codes found

Module: Instrument Panel Control Module

===END IPC DTC None===

===GWM DTC None===
Successful DTC reading, no error codes found

Module: Gateway Module A

===END GWM DTC None===

===IPMA DTC U0418:86-AF===
Code: U0418 - Invalid Data Received from Brake System Control Module 'A'

Additional Fault Symptom (:86):
- Signal Invalid

Status (-AF):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Image Processing Module A

Freeze Frame  #1:
-EVENT_TIME: 42662822 s (Fri Apr 05 16:15:17 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 14.8 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 64 °F - Outside temperature
-VEHICLE_SPEED: 6 mph - Vehicle Speed
-ECU_POWER_SUPPLY: 14.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 93 °F - ECU Internal Temperature
===END IPMA DTC U0418:86-AF===

Well, that sucks, especially with 15 miles of 60 mph country road ahead of me. But, still have a couple of errands to run, so let's just reset the codes and see if it comes back. And what do you know, still in limp mode, complete with all of the systems disabled messages. Second read from 20240405 1521z:

===SOBDMC DTC U1011:86-AF===
Code: U1011 - Invalid Internal Control Module Monitoring Data Received from ECM/PCM

Additional Fault Symptom (:86):
- Signal Invalid

Status (-AF):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Secondary OBD Control Module C

Freeze Frame  #1:
-EVENT_TIME: 42663153 s (Fri Apr 05 16:20:47 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 15.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 68 °F - Outside temperature
-ENG_TQ: 0.0 ft·lb - Engine Torque
-PRNDL_T: P  - Shift Position
-TFT: 70 °F - Transmission Fluid Temperature
-M_SPEED: 0 1/min - Motor Speed
-GTQ_CMD: 0.0 ft·lb - Generator Torque Command
-MTQ_CMD: 0.0 ft·lb - Motor Torque Command
-M_INV_V: 221.90 V - Motor Inverter Voltage
-G_PHTMP: 73 °F - Generator Inverter Phase Temperature
-MCLTEMP: 77 °F - Motor Coil Temperature
-GCLTEMP: 79 °F - Generator Coil Temperature
-G_SPEED: 0 1/min - Generator Speed
-TQ_DSD: 0.0 ft·lb - Desired Total Torque
-M_PHTMP: 77 °F - Motor Inverter Phase Temperature
-VEHMODE: Driving  - Vehicle Control Mode
-ECU_ONTIME: 64 min - Module On Time since Key On or Reset
-ECT: 108 °F - Engine coolant temperature
-CTO: 0 1/min - Tachometer signal output
-HV_AMP: 1.20 A - High Voltage Battery Current
-HVBAT_V: 221.50 V - High Voltage Battery Voltage
-APP: 0.00 % - Accelerator Pedal Position
-VPWR: 14.72 V - Control Module Voltage
-VS: 0.0 mph - Vehicle Speed
===END SOBDMC DTC U1011:86-AF===

===SOBDMC DTC U1028:00-AE===
Code: U1028 - ABS Control Module Received Invalid Data from ECM/PCM 'A'

Status (-AE):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Secondary OBD Control Module C

Freeze Frame  #1:
-EVENT_TIME: 42663164 s (Fri Apr 05 16:20:58 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 13.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 68 °F - Outside temperature
-ENG_TQ: 0.0 ft·lb - Engine Torque
-PRNDL_T: P  - Shift Position
-TFT: 70 °F - Transmission Fluid Temperature
-M_SPEED: 0 1/min - Motor Speed
-GTQ_CMD: 0.0 ft·lb - Generator Torque Command
-MTQ_CMD: 0.0 ft·lb - Motor Torque Command
-M_INV_V: 48.70 V - Motor Inverter Voltage
-G_PHTMP: 73 °F - Generator Inverter Phase Temperature
-MCLTEMP: 77 °F - Motor Coil Temperature
-GCLTEMP: 79 °F - Generator Coil Temperature
-G_SPEED: 0 1/min - Generator Speed
-TQ_DSD: 0.0 ft·lb - Desired Total Torque
-M_PHTMP: 77 °F - Motor Inverter Phase Temperature
-VEHMODE: Powerup  - Vehicle Control Mode
-ECU_ONTIME: 64 min - Module On Time since Key On or Reset
-ECT: 108 °F - Engine coolant temperature
-CTO: -32768 1/min - Tachometer signal output
-HV_AMP: 0.00 A - High Voltage Battery Current
-HVBAT_V: 222.00 V - High Voltage Battery Voltage
-VPWR: 12.64 V - Control Module Voltage
-VS: -203.6 mph - Vehicle Speed
===END SOBDMC DTC U1028:00-AE===

===BECM DTC None===
Successful DTC reading, no error codes found

Module: Battery Energy Control Module

===END BECM DTC None===

===PCM DTC None===
Successful DTC reading, no error codes found

Module: Powertrain Control Module

===END PCM DTC None===

===OBDII DTC None===
Successful DTC reading, no error codes found

Module: On Board Diagnostic II

===END OBDII DTC None===

===PACM DTC None===
Successful DTC reading, no error codes found

Module: Pedestrian Alert Control Module

===END PACM DTC None===

===DCDC DTC None===
Successful DTC reading, no error codes found

Module: DC to DC Converter Control Module

===END DCDC DTC None===

===BdyCM DTC None===
Successful DTC reading, no error codes found

Module: Body Control Module

===END BdyCM DTC None===

===BECMB DTC None===
Successful DTC reading, no error codes found

Module: Battery Energy Control Module B

===END BECMB DTC None===

===BCM_C DTC None===
Successful DTC reading, no error codes found

Module: Body Control Module C

===END BCM_C DTC None===

===TRM DTC None===
Successful DTC reading, no error codes found

Module: Trailer Module

===END TRM DTC None===

===OCS DTC None===
Successful DTC reading, no error codes found

Module: Occupant Classification System Module

===END OCS DTC None===

===ABS DTC U0401:00-2F===
Code: U0401 - Invalid Data Received from ECM/PCM A

Status (-2F):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Antilock braking system

Freeze Frame  #1:
-EVENT_TIME: 42663156 s (Fri Apr 05 16:20:50 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 14.8 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 66 °F - Outside temperature
===END ABS DTC U0401:00-2F===

===TCU DTC None===
Successful DTC reading, no error codes found

Module: Telematic Control Unit Module

===END TCU DTC None===

===RCM DTC None===
Successful DTC reading, no error codes found

Module: Restraint Control Module

===END RCM DTC None===

===HVAC DTC None===
Successful DTC reading, no error codes found

Module: Heating Ventilation Air Conditioning

===END HVAC DTC None===

===GSM DTC None===
Successful DTC reading, no error codes found

Module: Gear Shift Module

===END GSM DTC None===

===PSCM DTC None===
Successful DTC reading, no error codes found

Module: Power Steering Control Module

===END PSCM DTC None===

===ACM DTC None===
Successful DTC reading, no error codes found

Module: Audio Control Module

===END ACM DTC None===

===SCCM DTC None===
Successful DTC reading, no error codes found

Module: Steering Column Control Module

===END SCCM DTC None===

===IPC DTC None===
Successful DTC reading, no error codes found

Module: Instrument Panel Control Module

===END IPC DTC None===

===GWM DTC None===
Successful DTC reading, no error codes found

Module: Gateway Module A

===END GWM DTC None===

===IPMA DTC U0418:86-6C===
Code: U0418 - Invalid Data Received from Brake System Control Module 'A'

Additional Fault Symptom (:86):
- Signal Invalid

Status (-6C):
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Image Processing Module A

Freeze Frame  #1:
-EVENT_TIME: 42663156 s (Fri Apr 05 16:20:51 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 14.8 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 66 °F - Outside temperature
-ECU_POWER_SUPPLY: 14.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 100 °F - ECU Internal Temperature
===END IPMA DTC U0418:86-6C===

This drive is going to suck, but I don't have the luxury of just sitting and waiting or going straight to a dealer. Gotta get the groceries. Drive a quarter mile over to the commissary, park up and get my shopping out of the way. Come back out to the truck, and this time when it powers on I'm not greeted with the limp mode barrage, just the MIL. Third pull at 20240405 1540z:

===SOBDMC DTC U1011:86-ED===
Code: U1011 - Invalid Internal Control Module Monitoring Data Received from ECM/PCM

Additional Fault Symptom (:86):
- Signal Invalid

Status (-ED):
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC
- Test not complete

Module: Secondary OBD Control Module C

Freeze Frame  #1:
-EVENT_TIME: 42663221 s (Fri Apr 05 16:21:56 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 15.0 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 68 °F - Outside temperature
-ENG_TQ: 0.0 ft·lb - Engine Torque
-PRNDL_T: P  - Shift Position
-TFT: 70 °F - Transmission Fluid Temperature
-M_SPEED: 0 1/min - Motor Speed
-GTQ_CMD: 0.0 ft·lb - Generator Torque Command
-MTQ_CMD: 0.0 ft·lb - Motor Torque Command
-M_INV_V: 221.60 V - Motor Inverter Voltage
-G_PHTMP: 72 °F - Generator Inverter Phase Temperature
-MCLTEMP: 77 °F - Motor Coil Temperature
-GCLTEMP: 77 °F - Generator Coil Temperature
-G_SPEED: 0 1/min - Generator Speed
-TQ_DSD: 0.0 ft·lb - Desired Total Torque
-M_PHTMP: 75 °F - Motor Inverter Phase Temperature
-VEHMODE: Driving  - Vehicle Control Mode
-ECU_ONTIME: 64 min - Module On Time since Key On or Reset
-ECT: 106 °F - Engine coolant temperature
-CTO: 0 1/min - Tachometer signal output
-HV_AMP: 1.26 A - High Voltage Battery Current
-HVBAT_V: 221.50 V - High Voltage Battery Voltage
-APP: 0.00 % - Accelerator Pedal Position
-VPWR: 14.72 V - Control Module Voltage
-VS: 0.0 mph - Vehicle Speed
===END SOBDMC DTC U1011:86-ED===

===SOBDMC DTC U1028:00-AC===
Code: U1028 - ABS Control Module Received Invalid Data from ECM/PCM 'A'

Status (-AC):
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Secondary OBD Control Module C

Freeze Frame  #1:
-EVENT_TIME: 42663228 s (Fri Apr 05 16:22:03 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 12.8 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 68 °F - Outside temperature
-ENG_TQ: 0.0 ft·lb - Engine Torque
-PRNDL_T: P  - Shift Position
-TFT: 70 °F - Transmission Fluid Temperature
-M_SPEED: 0 1/min - Motor Speed
-GTQ_CMD: 0.0 ft·lb - Generator Torque Command
-MTQ_CMD: 0.0 ft·lb - Motor Torque Command
-M_INV_V: 53.40 V - Motor Inverter Voltage
-G_PHTMP: 72 °F - Generator Inverter Phase Temperature
-MCLTEMP: 77 °F - Motor Coil Temperature
-GCLTEMP: 77 °F - Generator Coil Temperature
-G_SPEED: 0 1/min - Generator Speed
-TQ_DSD: 0.0 ft·lb - Desired Total Torque
-M_PHTMP: 75 °F - Motor Inverter Phase Temperature
-VEHMODE: Open - Power Sustain Relay  - Vehicle Control Mode
-ECU_ONTIME: 64 min - Module On Time since Key On or Reset
-ECT: 106 °F - Engine coolant temperature
-CTO: 0 1/min - Tachometer signal output
-HV_AMP: 0.00 A - High Voltage Battery Current
-HVBAT_V: 221.50 V - High Voltage Battery Voltage
-APP: 0.00 % - Accelerator Pedal Position
-VPWR: 12.64 V - Control Module Voltage
-VS: 0.0 mph - Vehicle Speed
===END SOBDMC DTC U1028:00-AC===

===BECM DTC None===
Successful DTC reading, no error codes found

Module: Battery Energy Control Module

===END BECM DTC None===

===PCM DTC None===
Successful DTC reading, no error codes found

Module: Powertrain Control Module

===END PCM DTC None===

===OBDII DTC None===
Successful DTC reading, no error codes found

Module: On Board Diagnostic II

===END OBDII DTC None===

===PACM DTC None===
Successful DTC reading, no error codes found

Module: Pedestrian Alert Control Module

===END PACM DTC None===

===DCDC DTC None===
Successful DTC reading, no error codes found

Module: DC to DC Converter Control Module

===END DCDC DTC None===

===BdyCM DTC None===
Successful DTC reading, no error codes found

Module: Body Control Module

===END BdyCM DTC None===

===BECMB DTC None===
Successful DTC reading, no error codes found

Module: Battery Energy Control Module B

===END BECMB DTC None===

===BCM_C DTC None===
Successful DTC reading, no error codes found

Module: Body Control Module C

===END BCM_C DTC None===

===TRM DTC None===
Successful DTC reading, no error codes found

Module: Trailer Module

===END TRM DTC None===

===OCS DTC None===
Successful DTC reading, no error codes found

Module: Occupant Classification System Module

===END OCS DTC None===

===ABS DTC U0401:00-28===
Code: U0401 - Invalid Data Received from ECM/PCM A

Status (-28):
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Antilock braking system

Freeze Frame  #1:
-EVENT_TIME: 42663222 s (Fri Apr 05 16:21:57 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 14.8 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 66 °F - Outside temperature
===END ABS DTC U0401:00-28===

===TCU DTC None===
Successful DTC reading, no error codes found

Module: Telematic Control Unit Module

===END TCU DTC None===

===RCM DTC None===
Successful DTC reading, no error codes found

Module: Restraint Control Module

===END RCM DTC None===

===HVAC DTC None===
Successful DTC reading, no error codes found

Module: Heating Ventilation Air Conditioning

===END HVAC DTC None===

===GSM DTC None===
Successful DTC reading, no error codes found

Module: Gear Shift Module

===END GSM DTC None===

===PSCM DTC None===
Successful DTC reading, no error codes found

Module: Power Steering Control Module

===END PSCM DTC None===

===ACM DTC None===
Successful DTC reading, no error codes found

Module: Audio Control Module

===END ACM DTC None===

===SCCM DTC None===
Successful DTC reading, no error codes found

Module: Steering Column Control Module

===END SCCM DTC None===

===IPC DTC None===
Successful DTC reading, no error codes found

Module: Instrument Panel Control Module

===END IPC DTC None===

===GWM DTC None===
Successful DTC reading, no error codes found

Module: Gateway Module A

===END GWM DTC None===

===IPMA DTC U0418:86-2C===
Code: U0418 - Invalid Data Received from Brake System Control Module 'A'

Additional Fault Symptom (:86):
- Signal Invalid

Status (-2C):
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Image Processing Module A

Freeze Frame  #1:
-EVENT_TIME: 42663223 s (Fri Apr 05 16:21:57 2024) - Event time
-TOTAL_DISTANCE: 15946 miles - Total Distance
-MODULE_VOLTAGE: 14.8 V - Control Module Voltage
-OUTDOOR_TEMPERATURE: 66 °F - Outside temperature
-ECU_POWER_SUPPLY: 14.7 V - ECU Power Supply Voltage
-ECU_INTERNAL_TEMPERATURE: 100 °F - ECU Internal Temperature
===END IPMA DTC U0418:86-2C===

So what happened? Only thing that comes to mind is that the truck sat long enough that it all of the systems were able to be properly power cycled, since turning the truck off with the key doesn't actually turn the truck off right away. Reset the codes again, and this time nothing came back, code read was completely clean, MIL off, and everything was perfectly fine. Got home no issues, and then proceeded on a 150mi drive to the airport without any problems.

So what's the takeaway? If you get this fail, get somewhere safe, turn the truck off for 5-10 minutes, then proceed on your way. Obviously there's a problem, but at least you don't need to be stuck in limp mode the whole time.

Ford released new software updates at the end of March/beginning of April (I'm not certain of the exact date), that addressed this concern. That should be the fix!

 

[RadioDoc]

Ford released new software updates at the end of March/beginning of April (I'm not certain of the exact date), that addressed this concern. That should be the fix!

Has Ford published a TSB for this? Maybe I missed it last time I was looking at them. And since my garage is a complete third party that's working on all US-spec makes and models over here, I'd like to have something a bit more concrete to give them before I cough up the truck for 2 days for a software update they may or may not be able to find.

 

[KevCuRaoi]

Has Ford published a TSB for this? Maybe I missed it last time I was looking at them. And since my garage is a complete third party that's working on all US-spec makes and models over here, I'd like to have something a bit more concrete to give them before I cough up the truck for 2 days for a software update they may or may not be able to find.

No, no TSB. I really don't think there would ever be a TSB. Possibly an OASIS broadcast message or SSM. Maybe a footnote on the recall itself.


They did pause at least one (maybe more?) of the Maverick recalls for a few days, and then gave the all-clear to perform the FSA again. So it sounds like they figured out what the issue was and corrected it.

Ford dealers should be able to find the latest software easy....as long as they keep FDRS up-to-date. If an update shows up for Mavericks that are having this issue (on PCM and SOBDMC), then that should be the solution.

 

[RadioDoc]

No, no TSB. I really don't think there would ever be a TSB. Possibly an OASIS broadcast message or SSM. Maybe a footnote on the recall itself.


They did pause at least one (maybe more?) of the Maverick recalls for a few days, and then gave the all-clear to perform the FSA again. So it sounds like they figured out what the issue was and corrected it.

Ford dealers should be able to find the latest software easy....as long as they keep FDRS up-to-date. If an update shows up for Mavericks that are having this issue (on PCM and SOBDMC), then that should be the solution.

So the takeaway I'm getting here is that there's likely a software update that's been snuck into play, but no official direction instructing dealers or affected owners to seek out the update, just a lot of side channel discussions about it. Which then makes me wonder who will be responsible for the labor costs involved.

 

[dogtruck]

"what we have here, is a failure to communicate"
I divorced my first.
I'd set fire to this one.

 

[KevCuRaoi]

So the takeaway I'm getting here is that there's likely a software update that's been snuck into play, but no official direction instructing dealers or affected owners to seek out the update, just a lot of side channel discussions about it. Which then makes me wonder who will be responsible for the labor costs involved.

So far, yes.

If it is under powertrain warranty, it would just be claimed by normal warranty.

I've never encountered a situation like this before, but if outside of that....I'd think you'd be able to claim it similarly to a "service part warranty". Or the dealer would contact SSSC for instructions on how to proceed.

It is very possible that there may be an additional FSA for all Mavericks that got the software update during the "suspect" time period. That would cover the reprogramming.

 

[Thex]

I took mine into the shop when this happened to me at highway speeds a couple of weeks ago. They drove it for a couple of days and could not repeat it. They also did not see any new updates to apply to fix the ones the applied in February.

 

[RadioDoc]

I took mine into the shop when this happened to me at highway speeds a couple of weeks ago. They drove it for a couple of days and could not repeat it. They also did not see any new updates to apply to fix the ones the applied in February.

And that's what's so annoying about this issue. I've put hundreds of miles on my truck in between fails, so a dealership just taking it and driving it for a couple of days probably isn't going to see anything.

 

[CurtisB]

"what we have here, is a failure to communicate"
I divorced my first.
I'd set fire to this one.

Cool Hand Luke....................

 

[billkaz]

Ford released new software updates at the end of March/beginning of April (I'm not certain of the exact date), that addressed this concern. That should be the fix!

 

[billkaz]

Just had my xlt 2022 hybrid returned by the dealer, Sanderson Ford in Phoenix. They provide valet service, pick up and drop off plus a loaner, no charge. What a deal!
They performed a recall and claim to have corrected the limp mode with a software upgrade.
Will have to take a road trip to verify

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