Engine-Codes - Generic - B0996

B0996 Code - Vehicle Electronic Control Unit VIN Check Error

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

|B0996 code possible causes

  • Vehicle Identification Number (VIN) Set Up Procedure
  • Faulty Theft Deterrent Module (TDM)
  • Theft Deterrent Module (TDM) harness is open or shorted
  • Theft Deterrent Module (TDM) circuit poor electrical connection

|How is the B0996 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the B0996 code

Labor: 1.0

The cost to diagnose the B0996 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are B0996 code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What is B0996 code meaning?

After battery power has been restored following a loss of power, the Theft Deterrent Module (TDM) will perform a check on the stored Vehicle Identification Number (VIN). If the VIN is CORRECT, the TDM will run the VIN Timer for a programmable length of time, typically 10 minutes. The TDM will send a message via the serial data circuit to the Instrument Panel Cluster (IPC) to illuminate the SECURITY indicator. After the VIN Timer has timed out, the security indicator will turn OFF. If the VIN is INCORRECT, the TDM will send the fuel disable password to the Engine Control Module (ECM), via the serial data circuit. The immobiliser system considers this to be an indication of tampering and will not allow the vehicle to start. The TDM will send a message via the serial data circuit to the IPC to flash the SECURITY indicator.

|Need more information with the B0996 code?

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|B0996 code information for specific makes

  • B0996 BUICK Vehicle Electronic Control Unit VIN Check Error
  • B0996 CADILLAC Vehicle Electronic Control Unit VIN Check Error
  • B0996 CHEVROLET Vehicle Electronic Control Unit VIN Check Error
  • B0996 GMC Vehicle Electronic Control Unit VIN Check Error

|Need help with a B0996 code?

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