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 Lincoln Aviator AWDFACTORY OEM SERVICE PROCEDURE
Anti-Theft Systems DTCS
ANTI-THEFT DIAGNOSTIC TROUBLE CODE (DTC) INDEX
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| B1213 | Anti-Theft Number of Programmed Keys is Below Minimum | PCM | Go To PINPOINT TEST B . |
| B1342 | ECU is Defective | PCM | INSTALL a new PCM. REFER to REMOVAL & INSTALLATION in ENGINE PERFORMANCE. |
| B1600 | PATS Ignition Key Transponder Signal is Not Received - Damaged Key or Non-PATS Key | PCM | Go To PINPOINT TEST G . |
| B1601 | PATS Received Incorrect Key-Code From Ignition Key Transponder (Unprogrammed Encoded Ignition Key) | PCM | Go To PINPOINT TEST E . |
| B1602 or B2431 | PATS Received Invalid Format of Key-Code From Ignition Key Transponder (Partial Key Read) | PCM | Go To PINPOINT TEST F . |
| B1681 | PATS Transceiver Module Signal is Not Received (Damaged, Not Connected, or Damaged Wiring ) | PCM | Go To PINPOINT TEST D . |
| B2103 or B1232 | Antenna Not Connected - Defective Transceiver | PCM | Go To PINPOINT TEST C . |
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.