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.
2003 Ford ThunderbirdFACTORY OEM SERVICE PROCEDURE
Anti-Theft Systems DTCS
ANTI-THEFT DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action |
|---|---|---|---|
| B1213 | Anti-Theft Number of Programmed Keys is Below Minimum | Instrument Cluster | Go To PINPOINT TEST C . |
| B1342 | ECU is Defective | Instrument Cluster | CLEAR the DTCs. CARRY OUT the instrument cluster self-test. If DTC B1342 is retrieved again, INSTALL a new instrument cluster. REFER to INFORMATION, GAUGES & WARNING DEVICES . |
| B1600 | PATS Ignition Key Transponder Signal is Not Received | Instrument Cluster | Go To PINPOINT TEST F . |
| B1601 | PATS Received Incorrect Key-Code From Ignition Key Transponder | Instrument Cluster | Go To PINPOINT TEST G . |
| B1602 | PATS Received Invalid Format of Key-Code From Ignition Key Transponder | Instrument Cluster | Go To PINPOINT TEST H . |
| B1681 | PATS Transceiver Module Signal is Not Received | Instrument Cluster | Go To PINPOINT TEST I . |
| B2103 | Antenna Not Connected | Instrument Cluster | Go To PINPOINT TEST J . |
| B2139 | Data Mismatch (Receive Data Does Not Match What Was Expected) | Instrument Cluster | Go To PINPOINT TEST D . |
| B2141 | NVM Configuration Failure | Instrument Cluster | Go To PINPOINT TEST E . |
| U1147/U1262 | Data Mismatch 2 (Receive Data Does Not Match What Was Expected) | Instrument Cluster | Go To PINPOINT TEST D . |
| B2431 | Transponder Programming Failed | Instrument Cluster | Go To PINPOINT TEST F . |
Factory Service Tools
Use the Manual With the Right Hardware
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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.