Powertrain
generic / SAE
P262A
Fuel Injector - Pilot Injection Not Learned
The pilot (pre) injection learning routine on a common-rail diesel did not complete successfully. Without learned pilot quantity, combustion noise increases and NOx may rise.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number6 / 2A
Possible causes
- Injector flow drift outside learning window high
- Unstable rail pressure during learning cycle medium
Symptoms
- Check engine light on
- Misfire or rough idle on the affected cylinder
- Increased fuel consumption
- Possible fuel smell or smoke from exhaust
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2500 €
- Estimated time: 1.5–6 h
- Component: fuel injector
- Component: high pressure pump
- Component: control module
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012