OBD-II code · Powertrain (generic, extended)
P2A0F Fuel Supply Heater Performance
The fuel supply heater does not raise fuel temperature within the calibrated time window. Common in diesel and biofuel installations to prevent paraffin or fat crystallisation in cold weather.
Is it safe to drive with P2A0F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyHeater element aged - low output
- PossibleSupply voltage low under load
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Fuel Supply Heater, Fuel Temperature Sensor
Related codes
- P2A0CManifold Absolute Pressure Sensor B Circuit Low
- P2A0DManifold Absolute Pressure Sensor B Circuit High
- P2A0EManifold Absolute Pressure Sensor B Circuit Intermittent/Erratic
- P2A10O2 Sensor Negative Voltage Bank 2 Sensor 2
- P2A11O2 Sensor Negative Voltage Bank 2 Sensor 3
- P2A12Injection Pump Fuel Metering Control C (Cam/Rotor/Injector)
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.