Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there is a problem with a part of the engine that helps control the timing of the exhaust valves on one side of the engine. It's like a lock isn't working right for the part that helps the engine breathe out.
The code indicates an issue with the electrical circuit controlling the exhaust camshaft actuator's park lock on bank 2 of the engine.
P25D3 is triggered when the Engine Control Module (ECM) detects an open circuit or a fault in the exhaust camshaft actuator park lock control circuit for bank 2. This actuator is responsible for adjusting the timing of the exhaust camshaft to optimize engine performance and emissions.
• Check Engine Light illuminated
• Poor engine performance
• Increased emissions
• Faulty exhaust camshaft actuator
• Open or shorted wiring in the actuator circuit
• Faulty ECM or software issue
ECM: Engine Control Module
Actuator: A device that causes a machine or other device to operate
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the exhaust camshaft actuator for proper operation
• Repair or replace damaged wiring or connectors
• Replace the faulty exhaust camshaft actuator
• Update or reprogram the ECM if necessary
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regular maintenance and inspection of engine components
• Ensure timely oil changes
• Use quality engine oil
Engine Performance
• Avoid driving the vehicle until repaired to prevent further damage
• Consult a professional mechanic for diagnosis and repair
Check with your vehicle manufacturer; powertrain warranties may cover this repair.
This code has been associated with camshaft actuator issues in V8 engines, particularly in GM vehicles.
Moderate – Address promptly to avoid potential engine damage.
Driving with this code can increase emissions and may not be legal in areas with strict emissions regulations.
• Engine at operating temperature
• Vehicle in park or neutral
The exhaust camshaft actuator is located on the cylinder head of bank 2, typically on the side of the engine opposite the timing chain or belt.
Q: Can I drive with a P25D3 code?
A: It's not recommended to drive with this code as it can lead to poor engine performance and increased emissions.
Q: How serious is a P25D3 code?
A: While not immediately critical, it should be addressed soon to prevent potential engine damage.
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