Powertrain
generic / SAE
P2B53
A Camshaft Profile Actuator B Control Stuck On Bank 1
The control circuit of camshaft profile actuator B on the intake side of bank 1 reports a control stuck on condition. Cam profile B (high-lift or VTEC-style) cannot be commanded reliably.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberB / 53
Possible causes
- Actuator stuck in high-lift position high
- Release pressure path blocked medium
- Carbon or debris buildup preventing free movement low
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–800 €
- Estimated time: 1–4 h
- Component: a camshaft profile actuator b b1
- Component: wiring harness
- Component: ecm
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012