P0630

DTC P0630

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Strategy Based Diagnosis Strategy Based Diagnosis
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions

DTC Descriptor
DTC P0630
- VIN Not Programmed or Mismatched - Engine Control Module (ECM)

Circuit/System Description

This DTC sets when the engine control module (ECM) has determined that the vehicle identification number (VIN) is not stored in the ECM memory. When the control module is replaced, the VIN must be programmed into the control module memory.

Conditions for Running the DTC

* The control module is ON or awake.
* The DTC runs continuously when the above condition is met

Conditions for Setting the DTC

The ECM detects that no vehicle identification number (VIN) is stored in memory.

Action Taken When the DTC Sets

DTC P0630 is a type A DTC.

Conditions for Clearing the DTC

DTC P0630 is a type A DTC.

Diagnostic Aids

Some diagnostics will not run when the MIL is illuminated and DTC P0630 is set. Always program the VIN to the control module immediately after replacement.

If there are difficulties programming the VIN, ensure that all connections to the ECM and equipment are correct. Ensure that the latest software is installed and all programming procedures are performed correctly.

Reference Information

Description and Operation

Engine Control Module Description Engine Control Module Description

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference
* Scan Tool Data List (w/ Throttle Actuator Control) Scan Tool Data List (w/ Throttle Actuator Control)Scan Tool Data List (w/o Throttle Actuator Control) Scan Tool Data List (w/o Throttle Actuator Control)
* Scan Tool Data Definitions (w/ Throttle Actuator Control) Scan Tool Data Definitions (w/ Throttle Actuator Control)Scan Tool Data Definitions (w/o Throttle Actuator Control) Scan Tool Data Definitions (w/o Throttle Actuator Control)
* Scan Tool Output Controls (w/ Throttle Actuator Control) Scan Tool Output Controls (w/ Throttle Actuator Control)Scan Tool Output Controls (w/o Throttle Actuator Control) Scan Tool Output Controls (w/o Throttle Actuator Control)

Circuit/System Verification

Important: The ECM cannot determine if the VIN programmed into the control module is valid. Always verify that the VIN displayed on the scan tool is correct for that vehicle.


1. Ignition ON, observe the Vehicle Information under I/M System Information on the scan tool. The VIN information should match the vehicles VIN.

• If a VIN is not displayed, program the VIN with a scan tool.
• If a VIN is displayed, clear the DTCs with a scan tool. If DTC P0630 sets after clearing the DTCs, replace the ECM.

2. If the vehicle passes the Circuit/System Verification Test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records Data List.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

Control Module References Control Module References for engine control module replacement, setup, and programming