U1262 Code: Meaning, Causes, and Symptoms | OBD2 Codes

U1262 – Communication Bus Fault


U1262 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


U1262 Possible Causes


Faulty Powertrain Control Module (PC),Harness is open or shorted,Circuit poor electrical connection


U1262 Description


This code indicates a communication issue (Bus+, Bus-) between the PATS/HEC/ICM and some other module. Do not perform PATS diagnostics if a no start is not reported of if theft indicator is not flashing rapidly at ignition RUN position. If the indicator is flashing, check to make sure the PCM is powered up and operating. If it鈥檚 not, continue with PCM diagnostics.