OBD-II code · Powertrain (generic)
P01BA Engine Oil Temperature Sensor B Range/Performance
Engine oil temperature sensor B reading implausible.
Is it safe to drive with P01BA?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor reading drifted
- Less likelySensor element aged beyond calibration window
- Less likelySensor mounting loose - signal damping
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Oil Temp Sensor B
Related codes
- P01B7Alternative Fuel Rail Temperature Sensor Circuit High
- P01B8Alternative Fuel Rail Temperature Sensor Circuit Intermittent/Erratic
- P01B9Engine Oil Temperature Sensor B Circuit
- P01BBEngine Oil Temperature Sensor B Circuit Low
- P01BCEngine Oil Temperature Sensor B Circuit High
- P01BDEngine Oil Temperature Sensor B Circuit Intermittent/Erratic
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.