Powertrain
generic / SAE
P05EC
Cold Start Injection Timing Performance
During cold-start the ECU adjusts injection timing (post-injection on diesels, intake-stroke timing on direct-injection petrols) to support catalyst light-off. The strategy does not deliver the expected timing - injector response slow or sensor offset.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / EC
Possible causes
- Injectors slow when cold high
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1500 €
- Estimated time: 1–5 h
- Component: fuel injectors
- Component: cold start strategy
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012