PCM DTC Chart

PCM DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	Description	Action
P1260	Theft Detected, Vehicle Immobilized	NOTE: This DTC usually accompanies Passive Anti-Theft System (PATS) DTCs in the Instrument Panel Cluster (IPC). If the vehicle is not equipped with PATS , this PCM DTC can indicate the parameters in the IPC and the PCM need to be reset or a power or ground issue with the PCM. This PCM DTC can set in vehicles with or without PATS . Clear the DTCs. Repeat the self-test. If there are any PATS DTCs present in the IPC , ADDRESS them first. This DTC can also indicate a Controller Area Network (CAN) or a parameter reset concern. Make sure to verify if there are any communication concerns/DTCs with any modules. REFER to MODULE COMMUNICATIONS NETWORK article. If DTC P1260 is the only DTC present, there may be a parameter reset concern or a power or ground concern with the PCM. Even if the vehicle does not have PATS , it still has parameters that may need to be reset. REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) PARAMETER RESET . If necessary, CHECK the powers and grounds to the PCM. REFER to the appropriate System Wiring Diagrams article .
P1602	Immobilizer/ ECM Communication Error	NOTE: If IPC DTC B10DA:61 is also present, address IPC DTC B10DA:61 first. Go To PINPOINT TEST G .
P1622	Immobilizer ID Does Not Match	CARRY OUT a parameter reset. REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) PARAMETER RESET . CLEAR the DTCs. CYCLE the ignition 3-5 times, making an attempt to start the vehicle each key cycle. REPEAT the self-test.
All other DTCs	-	REFER to the INTRODUCTION - GASOLINE MODELS article or INTRODUCTION - 6.0L DIESEL - E-SERIES article.