C056C
Brake Pressure Sensor B Intermittent/Erratic
Intermittent signal from brake pressure sensor B.
Intermittent signal from brake pressure sensor B.
Common causes
- high
Connector loose or chafed wiring
One of the most commonly reported causes for this code — check this first.
Typical part cost: $110-1320
- low
Connector with intermittent contact under vibration
Less common, but worth ruling out after the more likely causes.
Typical part cost: $110-1320
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does C056C mean?
C056C means "Brake Pressure Sensor B Intermittent/Erratic". It is a generic OBD-II code that points to a fault in the chassis.
What are the most common causes of C056C?
connector loose or chafed wiring; connector with intermittent contact under vibration; harness routed against vibrating component — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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