C05A1
Brake Pressure Sensor E Circuit/Open
C05A1 is an OBD-II diagnostic trouble code meaning: Brake Pressure Sensor E Circuit/Open. Common causes: broken wires in the sensor harness, poor contact in the sensor connector. Estimated repair cost: $56–167.
Symptoms
- ABS/ESP indicator is on
- Reduced ABS performance
- Unstable operation of the ESP system
Causes
- Broken wires in the sensor harness
- Poor contact in the sensor connector
- Brake pressure sensor fault E
- Wiring harness damage
How to Fix
- Check the integrity of the sensor wiring harness
- Inspect connectors for oxidation or damage
- Check resistance of brake pressure sensor E
- Replace sensor if necessary
- Clean the connector contacts
Related codes
Error C05A1 by Vehicle Brand
FAQ
What does the C05A1 code mean?
C05A1 is an OBD-II diagnostic trouble code that indicates: Brake Pressure Sensor E Circuit/Open
What causes a C05A1 error code?
The most common causes of C05A1 include: Broken wires in the sensor harness; Poor contact in the sensor connector; Brake pressure sensor fault E; Wiring harness damage.
How do I fix a C05A1 diagnostic trouble code?
To fix C05A1: Check the integrity of the sensor wiring harness. Inspect connectors for oxidation or damage. Check resistance of brake pressure sensor E. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C05A1?
Limited driving only, diagnose soon
How much does it cost to fix C05A1?
The estimated repair cost for C05A1 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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