B Camshaft Position Actuator A Control Circuit/Open Bank 2
What it means
P0023 means the engine computer has detected an open or faulty electrical circuit to the Bank 2 "B" camshaft timing actuator — the VVT oil control solenoid. It's usually a wiring, connector, or solenoid fault. Variable valve timing on that bank stops responding, so the engine may idle rough and lose a little power.
Can I keep driving? Generally safe to keep driving — expect rough idle and slightly reduced power; repair it so variable valve timing works correctly.
Real-world scan data
Appears alongside · share of P0023 scans
Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.
Common symptoms
What you'll notice
- Check-engine light on
- Rough idle
- Slightly reduced power
- Minor drop in fuel economy
Common causes
Most likely first
- Faulty camshaft actuator / VVT oil control solenoid (Bank 2)Likely
- Open or shorted wiring in the solenoid control circuitCommon
- Loose or corroded connector at the solenoidCommon
- ECM control-driver fault (least likely)Less often
How to diagnose & fix
Work through it in order
- Inspect the Bank 2 VVT solenoid connector and wiring for damage or corrosion.
- Measure the solenoid resistance against spec; replace it if out of range.
- Check the control wire for continuity/an open back to the ECM.
- Repair the wiring or replace the solenoid, clear the code, and road-test.
FAQ
Quick answers
Is it safe to drive with P0023?+
Can I just clear P0023?+
Related codes
Read & clear P0023 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.