Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble controlling the opening and closing of a valve in cylinder 3 of the engine.
The engine control module (ECM) monitors the performance of the intake valve for cylinder 3. If it detects an issue with the valve's operation, it triggers this code.
P349A indicates a problem with the deactivation or performance of the intake valve in cylinder 3. This could be due to a malfunction in the variable valve timing (VVT) system or an issue with the cylinder deactivation mechanism.
• Check Engine Light is on
• Rough idling
• Decreased engine performance
• Faulty intake valve solenoid
• Wiring issues in the valve control circuit
• Mechanical failure in the valve train
ECM: Engine Control Module
VVT: Variable Valve Timing
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the intake valve solenoid for proper operation.
• Replace the faulty intake valve solenoid.
• Repair or replace damaged wiring.
• Inspect and repair mechanical components of the valve train.
• OBD-II scanner
• Multimeter
• Socket set
$150 - $500
Moderate
• Honda Accord
• Chevrolet Silverado
• Ford F-150
• Regular engine maintenance
• Timely oil changes
• Use of recommended oil grade
Engine Performance
• Avoid driving at high speeds until the issue is resolved.
• Check for any unusual noises from the engine.
Check with the vehicle manufacturer for warranty coverage on engine components.
This code has been commonly reported in vehicles with cylinder deactivation systems.
Moderate – Should be addressed soon to avoid potential engine damage.
Driving with a malfunctioning engine can lead to further damage and may not comply with emission standards.
• Engine at operating temperature
• Vehicle in idle or low-load conditions
The intake valve solenoid is typically located on the cylinder head near the intake manifold.
Q: Can I drive my car with a P349A code?
A: It's best to have it checked soon, as driving with this issue can lead to further engine damage.
Q: What causes the intake valve to malfunction?
A: Common causes include a faulty solenoid, wiring issues, or mechanical failures in the valve train.
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