OBD-II code · Powertrain (generic)
P0186 Fuel Temperature Sensor B Circuit Range / Performance
Fuel temperature sensor B reading is within electrical limits but implausible (no warmup change, disagrees with sensor A or ambient).
Is it safe to drive with P0186?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor drifted
- PossibleSensor stuck
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Temperature Sensor B
Related codes
- P0181Fuel Temperature Sensor A Circuit Range / Performance
- P0183Fuel Temperature Sensor A Circuit High Input
- P0184Fuel Temperature Sensor A Circuit Intermittent
- P0185Fuel Temperature Sensor B Circuit Malfunction
- P0187Fuel Temperature Sensor B Circuit Low Input
- P0188Fuel Temperature Sensor B Circuit High Input
- P0189Fuel Temperature Sensor B Circuit Intermittent
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.