Powertrain
generic / SAE
P21BD
Cold Start Cylinder 8 Injection Timing
Cylinder 8 cold-start injection timing is outside the calibrated window. Diesel cold-start uses adapted injection timing per cylinder to limit white smoke and noise; deviation typically points at a worn injector or faulty crank/cam correlation.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number1 / BD
Possible causes
- Injector flow-rate aged high
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2500 €
- Estimated time: 1–6 h
- Component: fuel injector
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012