C05BD
Brake Booster Motor B Position Sensor Supply Circuit Low
C05BD is an OBD-II diagnostic trouble code meaning: Brake Booster Motor B Position Sensor Supply Circuit Low. Common causes: broken or damaged wires in the sensor circuit, bad contacts in the sensor connectors. Estimated repair cost: $56–167.
Symptoms
- Increased brake pedal force
- The brake system fault indicator is on
- Reduced braking performance
- Unstable operation of the brake booster
Causes
- Broken or damaged wires in the sensor circuit
- Bad contacts in the sensor connectors
- Brake booster motor position sensor fault B
- Problems with the brake control unit (ECU)
- Short circuit in the sensor power supply circuit
How to Fix
- Check the integrity of wires and contacts in the sensor circuit
- Measure the voltage at the brake booster motor position sensor B
- Check sensor resistance to manufacturer specifications
- Replace brake booster motor position sensor B if necessary
- Check and, if necessary, replace the brake control unit (ECU)
Related codes
Error C05BD by Vehicle Brand
FAQ
What does the C05BD code mean?
C05BD is an OBD-II diagnostic trouble code that indicates: Brake Booster Motor B Position Sensor Supply Circuit Low
What causes a C05BD error code?
The most common causes of C05BD include: Broken or damaged wires in the sensor circuit; Bad contacts in the sensor connectors; Brake booster motor position sensor fault B; Problems with the brake control unit (ECU).
How do I fix a C05BD diagnostic trouble code?
To fix C05BD: Check the integrity of wires and contacts in the sensor circuit. Measure the voltage at the brake booster motor position sensor B. Check sensor resistance to manufacturer specifications. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with C05BD?
Limited driving only, diagnose soon
How much does it cost to fix C05BD?
The estimated repair cost for C05BD is $56–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat