C12F8 Code - Brake Pedal Position Sensor 3 Not Plausible
Quick Answer
The Electronic Brake Control Module (EBCM) uses inputs from the electronic brake control brake pedal position sensor to determine when the brake is applied and how much force is used. Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C12F8 indicates Brake Pedal Position Sensor 3 Not Plausible.
- Common causes
- Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C12F8 Description
What are the Possible Causes of the DTC C12F8?
- Faulty Brake Pedal Position Sensor
- Brake Pedal Position Sensor harness is open or shorted
- Brake Pedal Position Sensor circuit poor electrical connection
- Faulty Electronic Brake Control Module (EBCM)
How to Fix the DTC C12F8?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C12F8 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- C12F8 Buick — Brake Pedal Position Sensor 3 Not Plausible
- C12F8 Cadillac — Brake Pedal Position Sensor 3 Not Plausible
- C12F8 Chevrolet — Brake Pedal Position Sensor 3 Not Plausible
- C12F8 GMC — Brake Pedal Position Sensor 3 Not Plausible
Frequently Asked Questions about C12F8 Code
1. What does OBDII code C12F8 mean?
C12F8 indicates an issue with the Brake Pedal Position Sensor 3, where the sensor's signal is not plausible or outside the expected range.
2. What are the symptoms of code C12F8?
Symptoms may include the brake warning light or ABS light turning on, unresponsive or inconsistent braking performance, and potential loss of brake assist features.
3. What causes the C12F8 code to appear?
Common causes include a faulty Brake Pedal Position Sensor 3, damaged wiring or connectors, calibration issues, or a malfunction in the vehicle's electronic control module (ECM).
4. Can I drive with the C12F8 code active?
While the vehicle may still be drivable, it is not recommended as braking performance could be compromised, posing safety risks.
5. How is the C12F8 code diagnosed?
A technician typically uses a scan tool to confirm the code, inspects the brake pedal position sensor and its wiring, and checks for proper calibration or signal output.
6. How do you fix a C12F8 code?
Repairs may involve replacing the Brake Pedal Position Sensor 3, repairing or replacing damaged wiring, or recalibrating the sensor using a diagnostic tool.
7. How much does it cost to fix code C12F8?
The repair cost varies but typically ranges from $150 to $400, depending on whether the sensor, wiring, or additional components need attention.
8. Can I fix the C12F8 code myself?
If you have experience with automotive diagnostics and tools, you may be able to check and replace the sensor or wiring. However, recalibration often requires specialized equipment.
9. What happens if I ignore the C12F8 code?
Ignoring this code could lead to degraded braking performance, reduced safety, and potential damage to other components in the braking system.
10. Does the C12F8 code affect the ABS system?
Yes, the C12F8 code can impact ABS functionality, as the brake pedal position sensor provides critical input for the system to operate correctly.
Discuss the causes and fixes for C12F8 OBDII Code
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