What Does P0023 Mean?
The PCM has detected an electrical malfunction in the Bank 2 exhaust camshaft position actuator circuit. This is the Bank 2 equivalent of P0013. The wiring or solenoid for the exhaust VVT on Bank 2 has an open circuit, high resistance, or connection fault preventing proper PCM control of exhaust cam timing.
Common Causes
35%
Damaged or disconnected connector at the Bank 2 exhaust VVT solenoid
30%
Bank 2 exhaust VVT solenoid with an open internal coil
20%
Broken wire in the Bank 2 exhaust VVT circuit harness
10%
Corroded PCM connector pin on the Bank 2 exhaust VVT driver
5%
Wiring damage from exhaust heat on Bank 2 components
Diagnostic Steps
1
Inspect the Bank 2 exhaust VVT solenoid connector for damage, corrosion, or disconnection; Bank 2 exhaust solenoids are often in tight locations near the firewall
2
Measure solenoid coil resistance with a multimeter — expect 6.9-7.9 ohms; infinite reading indicates an open coil
3
Check for 12V on the supply wire and continuity on the PCM control wire back to the PCM (less than 2 ohms)
4
Inspect the harness near the exhaust manifold for heat damage, which is common on the Bank 2 exhaust side
5
If wiring checks pass, backprobe the PCM connector and verify the driver outputs a ground pulse when the solenoid is commanded
Estimated Repair Cost
$80 - $500
Parts + labor, varies by vehicle and location
The PCM has detected an electrical malfunction in the Bank 2 exhaust camshaft position actuator circuit. This is the Bank 2 equivalent of P0013. The wiring or solenoid for the exhaust VVT on Bank 2 has an open circuit, high resistance, or connection fault preventing proper PCM control of exhaust cam...
The most common cause of P0023 ("B" Camshaft Position - Actuator Circuit (Bank 2) - See Trouble Code P0020) is: Damaged or disconnected connector at the Bank 2 exhaust VVT solenoid
Typical repair costs for P0023 range from $80 to $500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The Bank 2 exhaust cam will operate at default timing. Reduced engine efficiency and slightly elevated emissions. Safe for normal driving but should be repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0023 to identify the root cause.
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Quick Info
Category
Powertrain
System
Variable Valve Timing (VVT) System
Difficulty
Type
Generic (SAE)
Recommended Tools
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