OBD-II code · Powertrain (generic, extended)
P2B39 B Camshaft Profile Actuator B Control Circuit/Open Bank 1
The control circuit of camshaft profile actuator B on the exhaust side of bank 1 reports a control circuit/open condition. Cam profile B (high-lift or VTEC-style) cannot be commanded reliably.
Is it safe to drive with P2B39?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyOpen in actuator control wire
- PossibleOpen actuator coil
- Less likelyPin pushed back out of connector body
Symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–4 h
- Emissions test
- Likely to fail
- Parts involved
- B Camshaft Profile Actuator B B1, Wiring Harness, Ecm
Related codes
- P001AA Camshaft Profile Actuator A Control Circuit/Open Bank 1
- P001DA Camshaft Profile Actuator A Control Circuit/Open Bank 2
- P002AB Camshaft Profile Actuator A Control Circuit/Open Bank 1
- P002DB Camshaft Profile Actuator A Control Circuit/Open Bank 2
- P2B33A Camshaft Profile Actuator B Control Circuit/Open Bank 1
- P2B36A Camshaft Profile Actuator B Control Circuit/Open Bank 2
- P2B3CB Camshaft Profile Actuator B Control Circuit/Open Bank 2
- P2B37A Camshaft Profile Actuator B Control Circuit Low Bank 2
- P2B38A Camshaft Profile Actuator B Control Circuit High Bank 2
- P2B3AB Camshaft Profile Actuator B Control Circuit Low Bank 1
- P2B3BB Camshaft Profile Actuator B Control Circuit High Bank 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.