Check Engine Light at 1,950 miles

[6bowmans]

2025 Maverick XLT, hybrid, AWD, towing package

I got into my Maverick yesterday to run an errand, and the AC was not working. Shut down the truck, got out, got back in, and still no AC (big deal as I live in AZ). I drove for about 15 minutes, and when I shut down at my destination, the truck kicked on the check engine light. I decided to finish my errand and trouble shoot on my return. When I powered the truck back on, the check engine light was still on, but the AC was now working. None of the local Ford dealers (3 of them) were answering their phones or taking any service reservations as they were in the process of switching all their stuff over to new ownership. Made an appointment with the closest available dealership an hour away (had to do the software update for the trailer/towing recall anyway). The code for the check engine was related to the AC (no shocker there), and they could not find any problem with the AC since it was now working. They cleared the code drove it around on a few short trips, and the AC worked everytime. Gremlins? Stray voltage? Why does the separate AC electric compressor kick off the check engine light?

If this is the earliest anyone has received a Check Engine Light?

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[HeyBales]

Did they give you the exact code and meaning for it?

Since the AC compressor is running off the 3 phase HV system - all kinds of possibilities.

 

[6bowmans]

Did they give you the exact code and meaning for it?

Since the AC compressor is running off the 3 phase HV system - all kinds of possibilities.

Code was U010F - Lost communication with air conditioning control module. 12V battery checked good.

 

[HeyBales]

Code was U010F - Lost communication with air conditioning control module. 12V battery checked good.

Oh - I get close to that one constantly.

Or at least it's in my scanner tool logs on startup. I'll clear it since pending code, and it'll be back later.
Don't know when it happened, and considering it's there during non-AC use season (except the background auto usage), mine isn't noticeable.

Mine may the other way around though, ACCM can't reach PCM:

===ACCM DTC U0100:00-08===
Code: U0100 - Lost Communication With ECM/PCM A

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

Module: Air Conditioning Control Module
===END ACCM===

I get the ACM a lot too.

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

Status:
- 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: 60361611 s (Wed Feb 4 19:51:32 2026) - Event time
-TOTAL_DISTANCE: 20281 miles - Total Distance
-ELEC_POE_STAS: Not Received - Electric Power Status
-ING_STAS: Run - Ignition Status
-POW_TOR_STAS: Powerpack On Torque Available - Powerpack Torque Status
-INT_AMB_TEM: 93 °F - Internal Ambient Temperature
-ECU_POWER_SUPPLY: 15.0 V - ECU Power Supply Voltage

===END ACM===


They get glitchy.
But they should have had some freeze frame data, that like above, probably wasn't useful.

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