OBD-II code · Powertrain (generic, extended)
P2B34 A Camshaft Profile Actuator B Control Circuit Low Bank 1
The control circuit of camshaft profile actuator B (intake side) on bank 1 reports a control circuit low condition. Cam profile B (high-lift or VTEC-style) cannot be commanded reliably.
Is it safe to drive with P2B34?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyControl wire shorted to ground
- PossibleInternal short in actuator coil
- Less likelyConnector pins corroded - high contact resistance
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
- A Camshaft Profile Actuator B B1, Wiring Harness, Ecm
Related codes
- P001BA Camshaft Profile Actuator A Control Circuit Low Bank 1
- P001EA Camshaft Profile Actuator A Control Circuit Low Bank 2
- P002BB Camshaft Profile Actuator A Control Circuit Low Bank 1
- P002EB Camshaft Profile Actuator A Control Circuit Low Bank 2
- P2B37A Camshaft Profile Actuator B Control Circuit Low Bank 2
- P2B3AB Camshaft Profile Actuator B Control Circuit Low Bank 1
- P2B3DB Camshaft Profile Actuator B Control Circuit Low Bank 2
- P2B31Fan 2 Performance/Stuck Off
- P2B32Fan 2 Stuck On
- P2B33A Camshaft Profile Actuator B Control Circuit/Open Bank 1
- P2B35A Camshaft Profile Actuator B Control Circuit High Bank 1
- P2B36A Camshaft Profile Actuator B Control Circuit/Open Bank 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.