P055B
Engine Oil Pressure Sensor/Switch B Range/Performance
Generic OBD-II
Real-world scan data
Seen in
29
scans in the past year
Found in
<0.1%
of scans
<0.1%
of scans that found faults
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check the engine oil level and add more if necessary
- Inspect the wiring and connections to the engine oil pressure sensor/switch
- Replace the engine oil pressure sensor/switch
- Check for any obstructions or blockages in the oil passages and ensure proper oil flow
Common causes
Most likely first
- Low engine oil level
- Faulty engine oil pressure sensor/switch
- Clogged oil filter
- Engine oil pump failure
- Engine oil viscosity too high or too low
How to diagnose & fix
Work through it in order
- Check engine light illuminates on the dashboard
- Engine misfires or runs rough
- Loss of power or reduced engine performance
- Engine stalls or struggles to start
- Increased fuel consumption
Read & clear P055B yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.