P2674Injection Pump Fuel Calibration Not Learned
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- Electronically governed diesel injection pumps meter the quantity per stroke themselves, and each unit differs slightly in how much it delivers for a given command. P2674 reports that the quantity correction for the installed pump has not been learned or stored in the controller. No manufacturer documents this code publicly; P2672 and P2673 cover the timing side of the same pump. CARB requires 2015-on vehicles whose fuel pumps or injectors carry production tolerance compensation, such as coded parts or trim resistors, to verify that the right compensation is in use. Without it, fuelling can drift, giving smoke, uneven idle or a shortfall of power until the learn routine is run.
- What you may notice
- Check engine light on
- Smoke or uneven idle
- Reduced power
- Likely causes
- LikelyQuantity learn not run after pump or controller replacement
- PossiblePump calibration data missing, wrong or not matching the installed pump
- RareFuel metering actuator fault preventing the learn from completing
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.