OBD-II Generic Error Code P0023: How to Fix It

Medium 1-2 hours Medium Severity Verified June 2026
Error Code
P0023
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
Error code P0023 indicates a problem with the camshaft position actuator circuit for bank 2 (B camshaft). This circuit controls variable valve timing, and a fault can cause rough idling, reduced power, and increased emissions. This guide helps you troubleshoot common causes like wiring issues or a faulty actuator.
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Tools You'll Need

How to Fix Error Code P0023

  1. Check Engine Light and Verify Symptoms

  2. Inspect Wiring and Connectors

    Disconnect the battery before working on electrical components.
  3. Test Actuator Solenoid Resistance

  4. Check Oil Level and Condition

    Warm up engine slightly before checking oil for accurate reading.
  5. Test Circuit Voltage and Ground

    Be careful not to short pins with test leads.
  6. Replace Camshaft Position Actuator Solenoid

Parts You May Need

Camshaft position actuator solenoid (bank 2, B cam)
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
O-ring for actuator solenoid
Check Price on Amazon
Camshaft position actuator solenoid (bank 2, B cam)
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
O-ring for actuator solenoid
Check Price on Amazon
Camshaft position actuator solenoid (bank 2, B cam)
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
O-ring for actuator solenoid
Check Price on Amazon
Camshaft position actuator solenoid (bank 2, B cam)
Check Price on Amazon
Engine oil and filter
Check Price on Amazon
O-ring for actuator solenoid
Check Price on Amazon
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When to Call a Professional

If you've replaced the actuator and verified wiring but the code returns, or if you're uncomfortable working with engine electronics, consult a professional mechanic. Also, if the code appeared after engine work or timing chain replacement, a misaligned timing chain may require expert attention.

Frequently Asked Questions

Can I drive with error code P0023?
You can drive short distances, but it may cause rough running and reduced fuel economy. Prolonged driving could damage catalytic converters or the timing chain, so address it promptly.
Is P0023 the same as P0010?
No. P0023 is for the B camshaft (exhaust) on bank 2, while P0010 refers to the A camshaft (intake) on bank 1. Both are actuator circuit faults but affect different cams.
How much does it cost to fix P0023?
DIY cost is $50-$150 for the actuator solenoid and oil change. A repair shop may charge $200-$500 depending on labor rates and additional diagnostics.
What causes P0023?
Common causes include faulty camshaft position actuator solenoid, wiring issues (shorts, opens, corrosion), low or dirty engine oil, or a bad engine control module (rare).
Will clearing the code fix P0023?
Clearing the code will turn off the check engine light temporarily, but the code will return if the underlying issue isn't fixed. It's only useful for verification after repair.