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.
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HOMESERVICE MANUALSFORD2010FOCUS SES, 2D COUPE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSDTC INDEXSEATING DTCS
2010 Ford Focus SES, 2D Coupe, Standard
Seating DTCS
2010 Ford Focus SES, 2D Coupe, StandardSECTION Seating DTCS
HVAC Module DTC Chart
| DTC | Description | Action |
|---|---|---|
| B12AB | Drivers Heated Seat Relay Drive Circuit Shorted to Battery Voltage | GO to PINPOINT TEST B . |
| B12AC | Drivers Heated Seat Relay Drive Circuit Open or Shorted to Ground | If the driver heated seat does not heat, GO to PINPOINT TEST B
. If the driver heated seat will not shut off, GO to PINPOINT TEST D . |
| B12AD | Passenger Heated Seat Relay Drive Circuit Shorted to Battery Voltage | GO to PINPOINT TEST C . |
| B12AE | Passenger Heated Seat Relay Drive Circuit Open or Shorted to Ground | If the passenger heated seat does not heat, GO to PINPOINT TEST C
. If the passenger heated seat will not shut off, GO to PINPOINT TEST D . |
| All Other DTCs | - | REFER to MULTIFUNCTION ELECTRONIC MODULES . |
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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.