B0996 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
First diagnose B0996 code
Check 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 terminals.
Cost of diagnosing the B0996 code
Labor: 1.0The cost of diagnosing the B0996 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
B0996 Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B0996 MeaningAfter 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.
B0996 More InformationNeed more information on how to fix the B0996 code?
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