Powertrain
generic / SAE
P037C
Cold Start Camshaft Profile System Performance
On engines with multi-profile (cold-start) cam lobes (e.g. some Honda i-VTEC variants and BMW Valvetronic), the cold-start cam profile actuator is not switching as expected — typically a stuck oil control valve or worn locking pin.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 7C
Possible causes
- Profile actuator stuck high
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2500 €
- Estimated time: 1.5–6 h
- Component: camshaft
- Component: oil control valve
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012