OBD-II code · Powertrain (generic)
P055A Engine Oil Pressure Sensor or Switch B Circuit
Engine Oil Pressure Sensor or Switch B Circuit: an electrical fault is present in the circuit.
Is it safe to drive with P055A?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen in sensor or wiring
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.4–1.4 h
- Emissions test
- Usually unaffected
- Parts involved
- Oil Pressure Sensor B
Related codes
- P0520Engine Oil Pressure Sensor or Switch A Circuit
- P0557Brake Booster Pressure Sensor Circuit Low
- P0558Brake Booster Pressure Sensor Circuit High
- P0559Brake Booster Pressure Sensor Circuit Intermittent
- P055BEngine Oil Pressure Sensor or Switch B Range or Performance
- P055CEngine Oil Pressure Sensor or Switch B Low
- P055DEngine Oil Pressure Sensor or Switch B High
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.