C0638
Brake Pressure Sensor G Range/Performance
C0638 is an OBD-II diagnostic trouble code meaning: Brake Pressure Sensor G Range/Performance. Common causes: brake pressure sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Check Engine Light Is On
- Unstable operation of the brake system
- Loss of braking efficiency
Causes
- Brake pressure sensor malfunction
- Open or short circuit in wiring harness
- Poor contact in the sensor connector
- Problems with the ECU
How to Fix
- Check the integrity of the wiring harness and sensor connector
- Test the brake pressure sensor with a multimeter
- Replace sensor if necessary
- Clear error codes and check the system
Related codes
Error C0638 by Vehicle Brand
FAQ
What does the C0638 code mean?
C0638 is an OBD-II diagnostic trouble code that indicates: Brake Pressure Sensor G Range/Performance
What causes a C0638 error code?
The most common causes of C0638 include: Brake pressure sensor malfunction; Open or short circuit in wiring harness; Poor contact in the sensor connector; Problems with the ECU.
How do I fix a C0638 diagnostic trouble code?
To fix C0638: Check the integrity of the wiring harness and sensor connector. Test the brake pressure sensor with a multimeter. Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0638?
Limited driving only, diagnose soon
How much does it cost to fix C0638?
The estimated repair cost for C0638 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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