Shift SYS Fault - Service Required (Hybrid CVT)

[Ford Motor Company]

Just got the same error on mine. I can’t say that it’s heat related because it’s 0 degrees Fahrenheit right now and it hasn’t been driven in 3 days. I now have a parking brake error, shift sys error, and constant deep sleep warnings. It has never died on me but I’m not sure I can trust driving it now. Sticking with the F150 until the dealer can get me in next month.

Hello, Jon! Send us a private message with your VIN and the name and location of your local Ford dealer. I’d be happy to see what I can do to assist with this concern. Thanks!

 

[njbacken]

I also now have a "shift sys fault" error after ~7800 miles and less than one year of ownership. I had a deep sleep warning about a month prior to that, which could have been from not driving for a few days and cold temperatures. West Herr Ford indicated they could not diagnose the problem without pulling the transmission. It has been at the dealership for about a month, which is understandable considering they were moving buildings and the transmission tech had a backlog. The truck suits my needs very well, but this issue and others with the CVT has me concerned.

 

[Oldguy66]

My Maverick was built 3/31/22. The cause of my "Shift Sys Fault" error was a bad module inside the CVT transmission. Back in November, Ford decided it would cost less just to replace the whole transmission rather than tear it apart and replace the bad module/s. I have not had any issues since I got the new transmission although my best MPG per tank fill is 34.1 (all highway miles) Since the new transmission I've driven 1,700 miles and averaged 31.7 MPG for all those miles. I've never seen 40 MPG with this Maverick. I was expecting the advertised MPG, so I'm going to trade it in when Dodge or Toyota come out with a similar mini-truck. This hybrid truck is very dangerous, too. When backing up, it lurches bad on an uphill incline. (as it needs more power going from battery to ICE) I almost took out my garage door. Hope I don't kill anyone.....

 

[njbacken]

Interesting timing of build dates here. My Maverick was built on 3/11/2022.

 

[njbacken]

Update on repairs from West Herr Ford. Seems like they had to pull my engine and transmission to fix. They have not been able to explain to me in plain language what the actual problem was...

VERIFY CUSTOMER CONCERN FOUND THE VEHICLE WILL NOT SHIFT INTO DRIVE WITH A FAULT MESSAGE ON THE DASH, CHECK FOR CODES FOUND CODE P07E6 STUCK IN PARK, PERFORM PINPOINT TEST E, E1 RETRIEVE DTC'S, E2 CHECK THE PARK SOLENOID POWER CIRCUIT FOR AN OPEN, FOUND .3 OHMS RESISTANCE, E3 CHECK THE PARK SOLENOID POWER CIRCUIT FOR A SHORT TO GROUND, FOUND INFINITE RESISTANCE, E4 CHECK THE PARK SOLENOID POWER CIRCUIT FOR A SHORT TOGETHER WITH THE POWER CIRCUITS, RESISTANCE IS INFINITE ON ALL PINS, E5 CHECK THE PARK SOLENOID GROUND CIRCUIT FOR AN OPEN, FOUND RESISTANCE OF 0.2 OHMS, E6 CHECK THE PARK SOLENOID GROUND FOR A SHORT TO GROUND, FOUND INFINITE RESISTANCE, E7 CHECK THE PARK SOLENOID GROUND CIRCUIT FOR A SHORT WITH POWER CIRCUITS, FOUND INFINITE RESISTANCE, RECOVER A/C SYSTEM, DRAIN COOLANT, REMOVE SUBFRAME, REMOVE ENGINE AND TRANSMISSION FROM THE VEHICLE, REMOVE TRANSMISSION CASE COVER, E8 CHECK THE TRANSMISSION INTERNAL HARNESS PARK SOLENOID POWER CIRCUIT FOR AN OPEN, FOUND 0.4 OHMS RESISTANCE, E9 CHECK THE TRANSMISSION INTERNAL PARK SOLENOID POWER CIRCUIT FOR A SHORT TO GROUND, FOUND INFINITE RESISTANCE, E10 CHECK THE TRANSMISSION INTERNAL HARNESS PARK SOLENOID POWER CIRCUIT FOR A SHORT TOGETHER WITH THE POWER CIRCUITS, FOUND INFINITE RESISTANCE, E11, CHECK THE TRANSMISSION INTERNAL HARNESS PARK SOLENOID GROUND CIRCUIT FOR AN OPEN, FOUND 0.4 OHMS RESISTANCE, E12 CHECK THE TRANSMISSION INTERNAL HARNESS PARK SOLENOID GROUND FOR A SHORT TO GROUND, FOUND INFINITE RESISTANCE, E13 CHECK THE TRANSMISSION INTERNAL HARNESS PARK SOLENOID GROUND CIRCUIT FOR A SHORT TOGETHER WITH POWER CIRCUITS, FOUND INFINITE RESISTANCE, REPLACE PARK LOCK ACTUATOR, RESEAL AND INSTALL TRANSMISSION CASE COVER, INSTALL ENGINE AND TRANSMISSION IN THE VEHICLE, CHARGE A/C SYSTEM, TOP OFF COOLANT AND TRANSMISSION FLUID, CLEAR DTC'S AND VERIFY REPAIRS, FOUND THE TRANSMISSION IS WORKING PROPERLY

 

[Darnon]

Update on repairs from West Herr Ford. Seems like they had to pull my engine and transmission to fix. They have not been able to explain to me in plain language what the actual problem was...

Looks like everything on the circuit side checked out okay (no shorts, no broken circuits) so they replaced the parking pawl solenoid/actuator which apparently fixed it.

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