P2673
Injection Pump Timing Calibration Not Learned
The injection pump timing learning routine did not complete successfully. Without learned values, injection timing runs from default tables and combustion is suboptimal.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
Common causes
Ordered by how often each turns out to be the cause.
- Learning routine aborted by other DTC or unstable conditionsCommon
- Timing actuator drift outside learning windowPossible
Parts involved
- Injection Pump
- Control Module
P2673 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.