P055C
Engine Oil Pressure Sensor/Switch B Low
P055C is an OBD-II diagnostic trouble code meaning: Engine Oil Pressure Sensor/Switch B Low. Common causes: low engine oil level, oil pump wear. Estimated repair cost: $17–889.
Symptoms
- The oil pressure lamp on the instrument panel lights up
- Check Engine Light Illuminates
- Extraneous knocking noises in the engine (at real low pressure)
- Unstable operation of the VVT system
- Engine emergency mode with speed limitation
Causes
- Low engine oil level
- Oil pump wear
- Clogged oil filter or oil receiver mesh
- Malfunction (break) of oil pressure sensor B
- Oil leak in internal engine channels
How to Fix
- Check the oil level on the dipstick IMMEDIATELY
- Do not start the engine when the oil level is low
- Connect a mechanical pressure gauge to check the actual oil pressure
- If the pressure is normal, check the sensor B circuit for an open/short circuit.
- Replace oil pressure sensor B if it is confirmed to be faulty
- If the pressure is really low, perform diagnostics on the oil pump and lubrication channels.
Related codes
Error P055C by Vehicle Brand
FAQ
What does the P055C code mean?
P055C is an OBD-II diagnostic trouble code that indicates: Engine Oil Pressure Sensor/Switch B Low
What causes a P055C error code?
The most common causes of P055C include: Low engine oil level; Oil pump wear; Clogged oil filter or oil receiver mesh; Malfunction (break) of oil pressure sensor B.
How do I fix a P055C diagnostic trouble code?
To fix P055C: Check the oil level on the dipstick IMMEDIATELY. Do not start the engine when the oil level is low. Connect a mechanical pressure gauge to check the actual oil pressure. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P055C?
Yes, but get it checked soon
How much does it cost to fix P055C?
The estimated repair cost for P055C is $17–889. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat