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: Tire Size Not Programmed

This diagnostic addresses if the engine control module (ECM) is not programmed with the tire size.

•	The ignition is ON.

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

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

DTC P161C is a Type A DTC.

DTC P161C is a Type A DTC.

Control Module References for scan tool information

Program the ECM. 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 K20 Engine Control Module.

⇒	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