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 Ford Taurus SEFACTORY OEM SERVICE PROCEDURE
Starting System DTCS
PCM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| P0512 | Starter Request Circuit - Circuit has Power With the Ignition in the OFF Position | PCM | CARRY OUT the Ignition Switch Component Test. Refer to appropriate COMPONENT TESTING article. If necessary, INSTALL a new ignition switch. If the ignition switch passed the component test, REPAIR circuit CDC35 (BU/WH) for a short to power. |
| P0705 | TR Sensor Circuit Failure | PCM | Refer to the appropriate Automatic Transmission article for the procedure. |
| P0706 | TR Sensor Circuit Failure | PCM | Refer to the appropriate Automatic Transmission article for the procedure. |
| P0708 | TR Sensor Circuit Failure | PCM | Refer to the appropriate Automatic Transmission article for the procedure. |
| P0709 | TR Sensor Circuit Failure | PCM | Refer to the appropriate Automatic Transmission article for the procedure. |
PASSIVE ANTI-THEFT SYSTEM (PATS) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| B1213 | Anti-Theft Number of Programmed Keys is Below Minimum | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
| B1342 | ECU is Defective (EEPROM in PCM not working) | PCM | INSTALL a PCM. REFER to ELECTRONIC ENGINE CONTROLS article. |
| B1600 | Passive Anti-Theft System (PATS) Key Transponder Signal is Not Received | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
| B1601 | PATS Received Incorrect Key-Code From Ignition Key Transponder | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
| B1602 | PATS Received Invalid Format of Key-Code From Ignition Key Transponder | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
| B1681 | PATS Transceiver Module Signal is Not Received | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
| B2103 | Antenna Not Connected | PCM | REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
| B2431 | Key Program Failure (Defective Key or Transceiver) | PCM | VERIFY if the correct PATS key is being used. If the PATS key is defective, use a new key for programming. REFER to ANTI-THEFT - PASSIVE ANTI-THEFT SYSTEM (PATS) article. |
Factory Service Tools
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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.
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