Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2009 Chrysler PT Cruiser Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Wireless Control Module (WCM) - Electrical Diagnostics
- Diagnostic Code Index
- DTC Troubleshooting
- B1A24-Key Not Programmed
- B1A25-Invalid Key
- B1A26-Maximum Number Of Keys Programmed
- B1A27-SKREEM Programming Performance
- B1A28-ECM Mismatch With Skim
- B1A29-Skim Base Station Mismatch
- B1A2A-Key 1 Communication Error
- B1A2B-Key 2 Communication Error
- B1A2C-Key 3 Communication Error
- B1A2D-Key 4 Communication Error
- B1A2E-Key 5 Communication Error
- B1A2F-Key 6 Communication Error
- B1A30-Key 7 Communication Error
- B1A31-Key 8 Communication Error
- B1A35-Unidentified Key Communication Error
- B2101-Ignition Run/Start Input Low
- B2102-Ignition Run/Start Input High
- B210A-System Voltage Low
- B210B-System Voltage High
- B210D-Battery Voltage Low
- B210E-Battery Voltage High
- B2204-Ecu Configuration Mismatch
- B2205-Original VIN Missing/Mismatch
- B2224-WCM Internal
- B2228-WCM Internal - RKE Receiver
- B2229-WCM Internal - Skim Immobilizer
- C0077- Low Tire Pressure
- C1501-Tire Pressure Monitoring (TPM) Sensor 1 Internal
- C1502-Tire Pressure Sensor 2 Internal
- C1503-Tire Pressure Sensor 3 Internal
- C1504-Tire Pressure Sensor 4 Internal
- C151C-Tire Pressure Monitoring (TPM) Sensors Missing
- U0019-Can B Bus
- U0155-Lost Communication With Cluster/CCN
- U0141-Lost Communication With Front Control Module
- Standard Procedure
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.