Rear Air Suspension

[Edward Myers]

Yes its me again LOL, from one thing to the next, Trying to make this car perfect and 100% code free. I've got a rear air suspension code U1026 Invalid or missing data for engine RPM. its a pending code and doesn't set a light and the suspension works fine, just wondering if anyone else has encountered this, cant find anything on the codes diag procedures. Honestly if I dont figure it out I dont care, it doesn't affect functionality or set a light. Thanks

[Mr. Man]

Clear the code and see if it comes back. Seems to be a communications error in the PCM when it can't find what it's looking for. "PCM fart" I think I saw someone write. If it comes back make sure all your connections are good. Google the code for more possible place to look as well.

[MyBlackBeasts]

air suspension code U1026: It can occur if: Someone changes a battery while the ignition switch is left on, that is, left in the “Run” position. Someone flashes/upgrades their engine controller – other modules unable to communicate with PCM during this process – this will set U1026 at a multitude of controllers on the vehicle – all false codes.