C028B Cadillac Code - Hand Brake Motor Position Sensor Signal
Quick Answer
The hand brake control module has an internal motor, apply actuator, release actuator, and temperature sensor. Common causes include Faulty Hand Brake Motor Position Sensor, Hand Brake Motor Position Sensor harness is open or shorted, Hand Brake Motor 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
- C028B Cadillac indicates Hand Brake Motor Position Sensor Signal.
- Common causes
- Common causes include Faulty Hand Brake Motor Position Sensor, Hand Brake Motor Position Sensor harness is open or shorted, Hand Brake Motor 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 C028B Cadillac Description
The Hand brake Motor Position Sensor is an internal sensor to the hand brake control module, this sensor is used to monitor the hand brake motor position.
What are the Possible Causes of the DTC C028B Cadillac?
- Faulty Hand Brake Motor Position Sensor
- Hand Brake Motor Position Sensor harness is open or shorted
- Hand Brake Motor Position Sensor circuit poor electrical connection
How to Fix the DTC C028B 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.
Code Tech Notes
- C028B 26: Hand Brake Motor Position Sensor Signal Low Frequency
- C028B 29: Hand Brake Motor Position Sensor Signal Too Few Pulses
- C028B 2A: Hand Brake Motor Position Sensor Signal Too Many Pulses
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C028B 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 C028B Cadillac Code
1. What does the OBDII code C028B mean on a Cadillac?
The code C028B indicates an issue with the Hand Brake Motor Position Sensor Signal, which monitors the position of the parking brake motor.
2. What are the common symptoms of the C028B code?
Symptoms may include the parking brake not engaging or releasing properly, a parking brake warning light on the dashboard, or a noticeable lack of braking assistance.
3. What causes the C028B code to appear?
Common causes include a faulty hand brake motor position sensor, damaged wiring or connectors, or a malfunctioning electronic parking brake module.
4. Can I drive my Cadillac with the C028B code active?
It’s not recommended to drive with this code active, as it can affect the functionality of the parking brake, which is a critical safety feature.
5. How is the C028B code diagnosed?
A technician will use a scan tool to confirm the code, inspect the hand brake motor position sensor, check wiring and connectors for damage, and test the parking brake system.
6. How do I fix the C028B code on my Cadillac?
Repairs may involve replacing the hand brake motor position sensor, repairing damaged wiring, or recalibrating the parking brake system with a scan tool.
7. How much does it cost to repair the C028B code issue?
Repair costs vary but typically range from $150 to $500, depending on whether the issue is with the sensor or requires more extensive electrical repair.
8. Can I reset the C028B code without fixing the problem?
While you can clear the code with a scan tool, it will likely return if the underlying issue isn’t resolved.
9. What tools are needed to diagnose and repair the C028B code?
Common tools include a diagnostic scan tool, a multimeter for testing electrical connections, and possibly specialized tools for removing or replacing the parking brake components.
10. Does the C028B code require recalibration of the parking brake system?
Yes, after replacing or repairing components, the parking brake system may need recalibration using a diagnostic tool to ensure proper functionality.
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