U1255 – CADILLAC

Code : U1255
Marque : CADILLAC
Description : U1255 CADILLAC Lost Communications
Possible causes :
– Loose control module connectors
– Faulty control module
– Control modules poor lectrical connection
– Control Modules harness open or shorted
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top
Scroll to Top