OBD codes / P0023
P0023
ModerateCamshaft Position Actuator Circuit (Bank 2, Exhaust)
P0023 is usually safe to drive with short-term — the computer defaults the Bank 2 exhaust cam to a safe fixed position. Check your oil promptly and schedule the diagnosis; a solenoid sticking from sludge can eventually set genuine timing codes on that bank.
What this code means
P0023 is a CIRCUIT code for the exhaust camshaft actuator on Bank 2 — the computer detected an electrical fault (open, short, or wrong resistance) when driving that bank's exhaust-cam oil-control solenoid. Because Bank 2 only exists on V-type and flat engines, this points to the solenoid on the bank opposite cylinder 1. The usual causes are the solenoid winding itself or its wiring and connector; it is not a report that the cam is out of position (that would be P0024/P0025). Low or dirty oil is the classic aggravator — sludge can bind the solenoid plunger — so verify oil level and condition before condemning parts. With the circuit down the computer holds that cam at base timing, so the engine runs with a rougher idle and slightly reduced economy.
Symptoms you might notice
- Check-engine light
- Rough or unstable idle
- Slightly reduced power and fuel economy
- Possible emissions-test failure
What it costs to fix
Typical range: $80–$450 · about ~0.3–1.5 hrs of labor
| If the cause is… | Part | Labor |
|---|---|---|
| Bank 2 exhaust-cam VVT/VCT solenoid | $30–$150 | ~0.3–1.5 hrs |
| Wiring / connector repair | $10–$120 | ~0.5–1.5 hrs |
The solenoid is cheap; the variable is access. On some V-type engines the Bank 2 solenoid sits toward the firewall or under intake plumbing, which adds labor compared with the easy-to-reach front bank.
The price swings on which cause it turns out to be — so confirm the cause before paying. Diagnose P0023 for my exact vehicle →
Frequently asked
What does Bank 2 mean on my engine?
Bank 2 is the cylinder bank that does not contain cylinder 1, so this code only appears on V-type or flat engines. On an inline engine there is no Bank 2 — the equivalent exhaust-cam circuit code would be P0013.
Is P0023 an electrical problem or a timing problem?
Electrical. The computer found a fault in the solenoid's circuit — wiring, connector, or the solenoid winding. If the cam were physically out of position you'd see a timing-performance code like P0024 or P0025 instead, though a badly stuck solenoid can eventually cause both.
Can an oil change fix P0023?
Sometimes — sludge from old or low oil can jam the solenoid plunger and trip the circuit fault. If the oil is overdue, change it with the correct grade first; if the code returns, test the solenoid resistance and inspect the wiring.
How much does it cost to fix P0023?
Typically modest — the solenoid is an inexpensive part, and most replacements take well under two hours. On engines where the Bank 2 solenoid is tucked against the firewall, expect somewhat more labor.
Seeing P0023 on your car? Get a diagnosis specific to your exact year, make and model.
Diagnose P0023 for my vehicleRelated trouble codes
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Generic OBD-II reference. Manufacturer-specific behavior varies — confirm with a scan tool and, for safety-related codes, a professional inspection.