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Code P0023

Quick reference

P0023 at a glance

Plain-language meaning
This code means there's a problem with a part of the engine that helps control the timing of the engine's valves. It's like a conductor in an orchestra not being able to direct the musicians properly.
Urgency
Moderate – Should be addressed soon to prevent further engine issues.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means there's a problem with a part of the engine that helps control the timing of the engine's valves. It's like a conductor in an orchestra not being able to direct the musicians properly.

Explanation

The P0023 code indicates an issue with the camshaft position actuator circuit for the exhaust camshaft on bank 2. This could be due to an electrical problem or a mechanical failure.

Technical description

The P0023 code is triggered when the Engine Control Module (ECM) detects an open or malfunction in the camshaft position actuator circuit for the exhaust camshaft on bank 2. This actuator is responsible for adjusting the camshaft timing to optimize engine performance.

Symptoms

• Check Engine Light illuminated

• Poor engine performance

• Rough idle

Common Causes

• Faulty camshaft position actuator

• Wiring issues in the actuator circuit

• Faulty ECM

Glossary

Camshaft: A shaft in the engine that controls the opening and closing of the engine's valves.

Actuator: A device that moves or controls a mechanism or system.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage.

• Test the camshaft position actuator for proper operation.

Repair procedures

• Replace the camshaft position actuator if faulty.

• Repair or replace damaged wiring or connectors.

• Reprogram or replace the ECM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Silverado

• Ford F-150

• Toyota Camry

Preventive measures

• Regular maintenance of the engine.

• Timely replacement of engine oil and filters.

• Regular inspection of electrical connections.

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the Check Engine Light.

• Seek professional diagnosis if unsure.

• Avoid driving the vehicle for extended periods with this code active.

Warranty information

Check with your vehicle manufacturer; some powertrain warranties may cover this issue.

Historical data

The P0023 code has been commonly reported in vehicles with variable valve timing systems, especially as they age.

Urgency level

Moderate – Should be addressed soon to prevent further engine issues.

Testing conditions

• Engine at operating temperature

• Vehicle in park or neutral

Component location

The camshaft position actuator is typically located near the camshaft on the engine, on bank 2, which is usually the side of the engine opposite the number one cylinder.

FAQs

Q: Can I drive with a P0023 code?
A: It's not recommended to drive for long periods with this code as it can lead to further engine damage.

Q: How can I reset the P0023 code?
A: You can reset the code with an OBD-II scanner, but it's important to fix the underlying issue first.

Optional diagnostic gear

Tools that may help diagnose P0023

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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