C129D Cadillac Code - Brake Pedal Position Sensor 4 Circuit Low Input
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
- C129D Cadillac indicates Brake Pedal Position Sensor 4 Circuit Low Input.
- 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 C129D Cadillac Description
What are the Possible Causes of the DTC C129D Cadillac?
- 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 C129D Cadillac?
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 C129D Cadillac 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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Frequently Asked Questions about C129D Cadillac Code
1. What are the common symptoms of OBDII code C129D (Cadillac) related to the Brake Pedal Position Sensor 4 Circuit Low Input?
The common symptoms include the brake lights staying on, difficulty shifting out of park, and potential issues with the vehicle's cruise control system.
2. What are the possible causes of OBDII code C129D (Cadillac) indicating a Brake Pedal Position Sensor 4 Circuit Low Input?
Possible causes include a faulty brake pedal position sensor, wiring issues in the sensor circuit, or a problem with the sensor's connector.
3. How can I diagnose the cause of OBDII code C129D (Cadillac) pointing to a Brake Pedal Position Sensor 4 Circuit Low Input?
You can diagnose the issue by visually inspecting the sensor and its wiring, checking for loose connections, using a multimeter to test the sensor's voltage, and conducting a scan tool test.
4. Can I continue driving my Cadillac with OBDII code C129D indicating a Brake Pedal Position Sensor 4 Circuit Low Input?
It is not recommended to continue driving the vehicle with this issue, as it can affect the proper operation of the brake system and other safety features.
5. How can I repair OBDII code C129D (Cadillac) related to the Brake Pedal Position Sensor 4 Circuit Low Input?
To repair the issue, you may need to replace the brake pedal position sensor, repair any damaged wiring or connectors, and clear the fault code with a scan tool.
6. Is it possible to reset OBDII code C129D (Cadillac) without fixing the underlying issue with the Brake Pedal Position Sensor 4 Circuit Low Input?
Resetting the code without addressing the root cause may temporarily clear the warning light, but the issue will likely reoccur until the sensor problem is fixed.
7. How much does it typically cost to fix OBDII code C129D (Cadillac) related to the Brake Pedal Position Sensor 4 Circuit Low Input?
The cost of repair can vary depending on the extent of the issue, but it may involve a replacement sensor, which can range from $50 to $150, plus labor costs if done by a mechanic.
8. Are there any DIY repair tips for addressing OBDII code C129D (Cadillac) associated with the Brake Pedal Position Sensor 4 Circuit Low Input?
If you have some experience with automotive repairs, you may be able to replace the brake pedal position sensor yourself by following online guides or the vehicle's service manual.
9. Can a faulty Brake Pedal Position Sensor 4 Circuit Low Input cause other problems in my Cadillac?
Yes, a malfunctioning brake pedal position sensor can lead to issues with the vehicle's braking system, cruise control, and transmission shifting.
10. How long does it typically take to repair OBDII code C129D (Cadillac) related to the Brake Pedal Position Sensor 4 Circuit Low Input?
The repair time can vary depending on the accessibility of the sensor and the extent of the issue, but it may take anywhere from 1 to 2 hours for a professional mechanic to complete the repair.
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