A Camshaft Profile Actuator B Control Circuit Low Bank 2
The control circuit of camshaft profile actuator B (intake side) on bank 2 reports a control circuit low condition. Cam profile B (high-lift or VTEC-style) cannot be commanded reliably.
Affected components
- A camshaft profile actuator b b2
- Wiring harness
- Ecm
Common causes
- High likelihood: Control wire shorted to ground
- Medium likelihood: Internal short in actuator coil
- Low likelihood: Connector pins corroded - high contact resistance
Possible symptoms
- Check engine light on
- Power loss especially in mid-rpm range
- Possible rough idle or stalling
- Increased fuel consumption
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.