OBD-II code · Powertrain (generic)
P01BD Engine Oil Temperature Sensor B Circuit Intermittent/Erratic
Intermittent signal from engine oil temp sensor B. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P01BD?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyConnector loose or corroded
- Less likelyConnector with intermittent contact under vibration
- Less likelyHarness routed against vibrating component
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, Sensor Wiring
Related codes
- P01BAEngine Oil Temperature Sensor B Range/Performance
- P01BBEngine Oil Temperature Sensor B Circuit Low
- P01BCEngine Oil Temperature Sensor B Circuit High
- P01BEFuel Rail Pressure Sensor Circuit Bank 2
- P01BFFuel Rail Pressure Sensor Circuit Range/Performance Bank 2
- P01C0Fuel Rail Pressure Sensor Circuit Low Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.