Service Information

Cruze

DTC P161C

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC P161C 00: Tyre Size Not Programmed Malfunction

This diagnostic addresses if the ECM is not programmed with the tyre size.

•	The ignition is ON.

•	The DTC runs continuously once the above condition is met.

The ECM detects that the tyre size is not programmed in the EEPROM for greater than 1 s.

DTCs P161C is a Type C DTC.

DTCs P161C is a Type C DTC.

Program the K20 Engine Control Module. If DTC P161C sets after programming, perform the following steps:

•	Ensure that all tool connections are secure.

•	Ensure the programming equipment is operating correctly.

•	Ensure the correct software and the correct calibration is used.

•	Attempt to program the ECM.

⇒	If DTC P161C sets, replace the K20 Engine Control Module.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for ECM replacement, setup, and programming