C128F Code - ABS Regenerative Axle Pressure Sensor Raw Offset Error
Quick Answer
The Electronic Brake Control Module (EBCM) uses input from the regenerative axle pressure sensor for more accurate control during a brake and vehicle stability enhancement system event. Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator 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
- C128F indicates ABS Regenerative Axle Pressure Sensor Raw Offset Error.
- Common causes
- Common causes include Faulty Brake Pressure Modulator, Brake Pressure Modulator harness is open or shorted, Brake Pressure Modulator 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 C128F Description
What are the Possible Causes of the DTC C128F?
- Faulty Brake Pressure Modulator
- Brake Pressure Modulator harness is open or shorted
- Brake Pressure Modulator circuit poor electrical connection
How to Fix the DTC C128F?
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 C128F 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.
Need more information about the C128F code?
Need more information on how to fix the C128F code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C128F code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C128F Buick — ABS Regenerative Axle Pressure Sensor Raw Offset Error
- C128F Cadillac — ABS Regenerative Axle Pressure Sensor Raw Offset Error
- C128F Chevrolet — ABS Regenerative Axle Pressure Sensor Raw Offset Error
- C128F GMC — ABS Regenerative Axle Pressure Sensor Raw Offset Error
Frequently Asked Questions about C128F Code
1. What does the OBDII code C128F mean?
The code C128F indicates an "ABS Regenerative Axle Pressure Sensor Raw Offset Error," which means the ABS system has detected an issue with the pressure sensor's calibration or offset readings.
2. What are the common symptoms of the C128F code?
Symptoms may include ABS or traction control warning lights, reduced regenerative braking performance, and potential loss of ABS functionality.
3. What causes the C128F code to be triggered?
Common causes include a faulty regenerative axle pressure sensor, wiring issues like damaged or corroded connectors, or a problem with the ABS module.
4. Can I still drive my car with the C128F code?
While the vehicle may still be drivable, ABS functionality and regenerative braking may be compromised, which can affect safety during braking.
5. How is the C128F code diagnosed?
Technicians typically use a diagnostic scan tool to read the code, inspect the axle pressure sensor and wiring, and test the ABS system to determine the root cause.
6. What repairs are needed to fix the C128F code?
Repairs may include replacing the regenerative axle pressure sensor, repairing or replacing damaged wiring, or recalibrating the ABS module.
7. How much does it cost to fix the C128F code?
Repair costs vary but typically range from $150 to $500, depending on whether the sensor needs replacement or wiring repairs are required.
8. Can a bad regenerative axle pressure sensor cause other problems?
Yes, a faulty sensor can impact the ABS and traction control systems, leading to reduced braking performance and potential safety risks.
9. Is it possible to reset the C128F code without replacing parts?
In some cases, recalibrating the ABS module or clearing temporary glitches can reset the code, but this won’t fix underlying hardware issues.
10. How can I prevent the C128F code from appearing again?
Regular maintenance, including checking the ABS system and wiring for damage or corrosion, can help prevent this code from recurring.
Discuss the causes and fixes for C128F OBDII Code
Code C128F comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
