P0556
Brake Booster Pressure Sensor Circuit Range/Performance
P0556 is an OBD-II diagnostic trouble code meaning: Brake Booster Pressure Sensor Circuit Range/Performance. Common causes: brake booster pressure sensor malfunction, open or short circuit in wiring harness. Estimated repair cost: $33–111.
Causes
- Brake booster pressure sensor malfunction
- Open or short circuit in wiring harness
- Poor contact in sensor connectors
- Control unit malfunction
How to Fix
- Check the sensor connection and the condition of the wiring harness
- Test the pressure sensor with a multimeter
- Replace sensor if necessary
- Check the condition of the vacuum brake booster
- Reset the error and check the system
Error P0556 by Vehicle Brand
FAQ
What does the P0556 code mean?
P0556 is an OBD-II diagnostic trouble code that indicates: Brake Booster Pressure Sensor Circuit Range/Performance
What causes a P0556 error code?
The most common causes of P0556 include: Brake booster pressure sensor malfunction; Open or short circuit in wiring harness; Poor contact in sensor connectors; Control unit malfunction.
How do I fix a P0556 diagnostic trouble code?
To fix P0556: Check the sensor connection and the condition of the wiring harness. Test the pressure sensor with a multimeter. Replace sensor if necessary. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0556?
Limited driving only, diagnose soon
How much does it cost to fix P0556?
The estimated repair cost for P0556 is $33–111. Actual cost depends on your vehicle, location, and labor rates.
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