C0139
Base Brake System Pressure Circuit/Sensor High
C0139 is an OBD-II diagnostic trouble code meaning: Base Brake System Pressure Circuit/Sensor High. Common causes: brake pressure sensor malfunction, short circuit in the sensor circuit. Estimated repair cost: $56–167.
Symptoms
- ABS/ESP indicator is on
- Disabling the stabilization system
- Hard or uneven brake application
- Errors in related systems
Causes
- Brake pressure sensor malfunction
- Short circuit in the sensor circuit
- Broken or damaged wiring harness
- Problems with the ABS/ESP control unit
- Contact corrosion
How to Fix
- Check the integrity of the wiring harness to the sensor
- Measure the resistance and voltage in the sensor circuit
- Check the sensor readings with a scanner
- Replace pressure sensor if necessary
- Clean contacts and connectors
- Flash the control unit if you suspect a software error
Related codes
Error C0139 by Vehicle Brand
FAQ
What does the C0139 code mean?
C0139 is an OBD-II diagnostic trouble code that indicates: Base Brake System Pressure Circuit/Sensor High
What causes a C0139 error code?
The most common causes of C0139 include: Brake pressure sensor malfunction; Short circuit in the sensor circuit; Broken or damaged wiring harness; Problems with the ABS/ESP control unit.
How do I fix a C0139 diagnostic trouble code?
To fix C0139: Check the integrity of the wiring harness to the sensor. Measure the resistance and voltage in the sensor circuit. Check the sensor readings with a scanner. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C0139?
Limited driving only, diagnose soon
How much does it cost to fix C0139?
The estimated repair cost for C0139 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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