For 1990-2009 cars

### Diagnostic Instructions

• | 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 Descriptor

DTC P160A 00: Vehicle Speed Limit Not Programmed

### Circuit/System Description

This diagnostic addresses if the ECM is not programmed with the speed limit.

### Conditions for Running the DTC

• | The ignition is ON.

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

### Conditions for Setting the DTC

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

### Action Taken When the DTC Sets

DTC P160A is a Type A DTC.

### Conditions for Clearing the DTC

DTC P160A is a Type A DTC.

### Reference Information

#### DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

### Circuit/System Testing

Program the ECM. If DTC P160A 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 (ECM).

⇒ | If DTC P160A sets, replace the K20 Engine Control Module (ECM).

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for ECM replacement, setup, and programming.