ezOBD2 - Free OBD2 Code Lookup and Check Engine Light Diagnostic Tool

Diagnose Your Check Engine Light

Enter OBDII code below:

Code P3415

Symptoms

• Check Engine Light is on

• Reduced engine performance

• Rough idling

Common Causes

• Faulty exhaust valve control solenoid

• Wiring issues in the exhaust valve circuit

• Malfunctioning ECM

Glossary

ECM: Engine Control Module

Solenoid: A device that converts electrical energy into mechanical movement

Related Codes

• P3416

• P3417

Official description

Cylinder 2 Exhaust Valve Control Circuit Low

Laymans terms

The car's computer is saying that it can't control one of the exhaust valves in the engine properly. It's like a switch is stuck in the off position for that part.

Explanation

The engine control module (ECM) has detected a low voltage condition in the circuit that controls the exhaust valve for cylinder 2.

Technical description

The P3415 code indicates that the ECM has found an issue with the circuit controlling the exhaust valve for cylinder 2. This could be due to a wiring problem, a faulty solenoid, or a malfunctioning ECM. The circuit is not receiving the expected voltage, which affects the valve's operation.

Diagnosis steps

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

• Inspect the wiring and connectors for cylinder 2 exhaust valve solenoid.

• Test the exhaust valve control solenoid for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the exhaust valve control solenoid if faulty.

• 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

• GMC Sierra

• Cadillac Escalade

Preventive measures

• Regularly inspect wiring and connectors for damage.

• Ensure timely maintenance of the engine.

• Use high-quality engine oil.

Error code type

Engine Performance

User experience recommendations

• Avoid driving the vehicle until the issue is resolved to prevent further damage.

• Consult a professional mechanic if you are not experienced with engine repairs.

Warranty information

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

Historical data

This code has been reported in vehicles with active fuel management systems, where cylinder deactivation is used to improve fuel efficiency.

Urgency level

Moderate – It should be addressed soon to avoid potential engine damage.

Legal and safety notice

Driving with a malfunctioning exhaust valve control can lead to increased emissions and potential engine damage.

Testing conditions

• Engine at operating temperature

• Vehicle in park or neutral

Component location

The exhaust valve control solenoid for cylinder 2 is typically located near the engine's cylinder head.

FAQs

Q: Can I drive with a P3415 code?
A: It's not recommended to drive with this code as it can lead to engine damage.

Q: How can I clear a P3415 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.

Last updated: Mar 19, 2026 • Source: internal database
🌙