Theft Deterrent System - Fuel Disabled
2002-2002 Cadillac Escalade 6.0L V8
The 2002 Cadillac Escalade is equipped with a 6.0L V8 engine. Below you'll find detailed p1632 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The theft deterrent system has actively disabled fuel delivery because the correct key/password was not verified. The PCM is preventing the engine from running as an anti-theft measure.
Symptoms
- Engine will not start
- Engine cranks but does not fire
- Security light illuminated
- No fuel injector pulse
Common Causes
- Incorrect key used
- Passlock sensor failure
- BCM not sending fuel enable signal
- New BCM not programmed to vehicle
- Key transponder failure
Diagnostic Steps
- Verify correct key is being used
- Check security light behavior
- Perform theft deterrent relearn procedure
- Test fuel enable circuit
- Check BCM programming
Repair Notes
Perform security relearn procedure. If using correct key and relearn fails, replace Passlock sensor. Ensure BCM is programmed to the vehicle.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1632 on Other Vehicles
Common Questions
What does code P1632 mean on a 2002-2002 Cadillac Escalade?
P1632 stands for "Theft Deterrent System - Fuel Disabled". The theft deterrent system has actively disabled fuel delivery because the correct key/password was not verified. The PCM is preventing the engine from running as an anti-theft measure.
What are the symptoms of P1632 on a Cadillac Escalade?
Common symptoms of P1632 include: Engine will not start, Engine cranks but does not fire, Security light illuminated, No fuel injector pulse.
What causes P1632 on a 2002-2002 Cadillac Escalade?
Common causes of P1632 include: Incorrect key used, Passlock sensor failure, BCM not sending fuel enable signal, New BCM not programmed to vehicle, Key transponder failure.
Last updated: March 2026