Immobilizer Transponder Authentication Failure
2002-2008 Jaguar X-Type 2.5L V6 🇨🇦
Description
The immobilizer detected a transponder signal but authentication failed. The key code does not match the stored code.
Symptoms
- Engine cranks but will not start
- Security light solid on
- Key rejected by system
Common Causes
- Key not programmed to this vehicle
- Immobilizer module lost key memory
- Aftermarket key with incorrect code
- Immobilizer control module failure
Diagnostic Steps
- Try all registered keys
- Check key programming status
- Attempt key relearn procedure
- Scan immobilizer module codes
- Verify VIN match in immobilizer
Repair Notes
Reprogram key to vehicle using manufacturer procedure. May require dealer tool.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B0102 on Other Vehicles
Jaguar E-PACE
2018-2024 2.0L I4 Turbo
Jaguar F-PACE
2017-2024 2.0L I4 Turbo
Jaguar F-PACE
2017-2024 3.0L V6 Supercharged
Jaguar F-Type
2014-2024 3.0L V6 Supercharged
Jaguar F-Type R
2014-2024 5.0L V8 Supercharged
Jaguar I-PACE
2019-2024 Electric AWD
Jaguar S-Type
2000-2008 3.0L V6
Jaguar XE
2017-2024 2.0L I4 Turbo
Common Questions
What does code B0102 mean on a 2002-2008 Jaguar X-Type?
B0102 stands for "Immobilizer Transponder Authentication Failure". The immobilizer detected a transponder signal but authentication failed. The key code does not match the stored code.
What are the symptoms of B0102 on a Jaguar X-Type?
Common symptoms of B0102 include: Engine cranks but will not start, Security light solid on, Key rejected by system.
What causes B0102 on a 2002-2008 Jaguar X-Type?
Common causes of B0102 include: Key not programmed to this vehicle, Immobilizer module lost key memory, Aftermarket key with incorrect code, Immobilizer control module failure.