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Code P25CC

Quick reference

P25CC at a glance

Plain-language meaning
This code means there's a problem with the part of the engine that helps control how the intake camshaft moves. It's like a lock that isn't working right, and it's making the engine unhappy.
Urgency
Moderate – Should be addressed to prevent further engine performance issues.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Wrench set

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

Laymans terms

This code means there's a problem with the part of the engine that helps control how the intake camshaft moves. It's like a lock that isn't working right, and it's making the engine unhappy.

Explanation

The P25CC code indicates an issue with the electrical circuit that controls the intake camshaft actuator's park lock on bank 1. The circuit is reading a voltage higher than expected.

Technical description

The intake camshaft actuator park lock control circuit is responsible for managing the position of the intake camshaft when the engine is not running. A 'high' circuit condition indicates that the voltage is above the normal operating range, which can affect the timing and performance of the engine.

Symptoms

• Check Engine Light is on

• Poor engine performance

• Rough idling

Common Causes

• Faulty intake camshaft actuator

• Damaged wiring or connectors

• Faulty Engine Control Module (ECM)

Glossary

Camshaft: A shaft in the engine that controls the opening and closing of the intake and exhaust valves.

Actuator: A component 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 intake camshaft actuator for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the intake camshaft actuator if faulty.

• Reprogram or replace the ECM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Wrench set

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Malibu

• GMC Acadia

• Buick Enclave

Preventive measures

• Regular maintenance of the engine

• Check wiring and connectors periodically

• Use quality engine oil

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the Check Engine Light.

• Have the vehicle inspected by a professional if unsure.

Warranty information

Check with the vehicle manufacturer for specific warranty coverage on engine components.

Historical data

This code has been associated with issues in vehicles that use variable valve timing systems.

Urgency level

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

Testing conditions

• Engine at operating temperature

• Vehicle in park or neutral

Component location

The intake camshaft actuator is typically located on the cylinder head, near the intake camshaft.

FAQs

Q: Can I drive with a P25CC code?
A: It's not recommended to drive for long periods with this code, as it can affect engine performance.

Q: Will a P25CC code cause my car to fail emissions tests?
A: Yes, it can cause increased emissions, leading to a failed emissions test.

Optional diagnostic gear

Tools that may help diagnose P25CC

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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