Theft Deterrent System Starter Disable
1990-1997 Ford Aerostar 4.0L V6
Description
The theft deterrent system has disabled the starter circuit due to a detected theft condition or system malfunction.
Symptoms
- Engine will not crank
- Security light on solid
- Key turns but starter does not engage
- No-crank no-start condition
Common Causes
- Theft system triggered by incorrect key
- System malfunction falsely detecting theft
- BCM starter relay driver failure
- Immobilizer-theft system communication error
Diagnostic Steps
- Verify key is correct for vehicle
- Perform theft system reset procedure
- Scan BCM and immobilizer codes
- Test starter relay control circuit
- Check theft system arm/disarm status
Repair Notes
Perform theft system relearn or reset. If BCM is faulty, replace and program.
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
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
- B0012Driver Side Airbag Deployment Circuit Short to Ground
- B0013Driver Side Airbag Deployment Circuit Short to Battery
B0124 on Other Vehicles
Ford Aerostar
1990-1997 3.0L V6
Ford Bronco
1990-1996 4.9L I6 300
Ford Bronco
1990-1996 5.0L V8 302 Windsor
Ford Bronco
1990-1996 5.8L V8 351 Windsor
Ford Bronco
2021-2024 2.3L I4 EcoBoost
Ford Bronco
2021-2024 2.7L V6 EcoBoost
Ford Bronco Raptor
2022-2024 3.0L V6 EcoBoost
Ford Bronco Sport
2021-2024 1.5L I3 EcoBoost
Common Questions
What does code B0124 mean on a 1990-1997 Ford Aerostar?
B0124 stands for "Theft Deterrent System Starter Disable". The theft deterrent system has disabled the starter circuit due to a detected theft condition or system malfunction.
What are the symptoms of B0124 on a Ford Aerostar?
Common symptoms of B0124 include: Engine will not crank, Security light on solid, Key turns but starter does not engage, No-crank no-start condition.
What causes B0124 on a 1990-1997 Ford Aerostar?
Common causes of B0124 include: Theft system triggered by incorrect key, System malfunction falsely detecting theft, BCM starter relay driver failure, Immobilizer-theft system communication error.