OBD-II code · Powertrain (generic)
P0168 Fuel Temperature Too High
Fuel temperature exceeds the safe maximum. Risk of fuel pump damage and injection imprecision.
Is it safe to drive with P0168?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyFuel cooler not effective
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Fuel Temp Sensor, Fuel Cooler, Fuel Return
Related codes
- P0165O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
- P0166O2 Sensor Circuit No Activity / Slow Response (Bank 2 Sensor 3)
- P0167O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
- P0169Incorrect Fuel Composition
- P016AExcessive Time To Enter Closed Loop Air/Fuel Ratio Control
- P016BClosed Loop Air/Fuel Ratio Control At Limit - System Too Rich
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.