Error code
OBD2 P0557
OBD2P0557
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Brake Booster Pressure Sensor Circuit Low Input.
Severity
moderateCan drive but should be addressed soon as it may affect braking performance.
Summary
P0557 indicates that the brake booster pressure sensor circuit is receiving an abnormally low input signal, which could affect braking performance. This issue involves the brake servo pressure sensor.
Common Causes
- Wiring short to earth
- Faulty brake servo pressure sensor
Fixes
- Replace the faulty brake servo pressure sensor or repair any wiring issues.
FAQ
What does P0557 mean?
P0557 indicates a low input signal from the brake booster pressure sensor, which could affect braking performance.
How serious is P0557?
It's moderately serious. While you can still drive, it should be addressed soon to ensure proper braking function.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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