OBD-II code · Powertrain (generic, extended)
P2674 Injection Pump Fuel Calibration Not Learned
The injection pump fuel quantity calibration did not complete successfully. Without learned fuel calibration, AFR runs from default tables and emissions or smoke can rise.
Is it safe to drive with P2674?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyLearning routine aborted by other DTC or unstable conditions
- PossibleFuel quantity solenoid drift outside learning window
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–5 h
- Emissions test
- Likely to fail
- Parts involved
- Injection Pump, Control Module, Fuel Quantity Solenoid
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.