P349B
Cylinder 4 Deactivation/Intake Valve Performance
P349B is an OBD-II diagnostic trouble code meaning: Cylinder 4 Deactivation/Intake Valve Performance. Common causes: malfunction of the cylinder deactivation solenoid valve, mechanical damage to the intake valve. Estimated repair cost: $17–89.
Symptoms
- Increased fuel consumption
- Unstable engine operation
- Power reduction
- Check Engine Light Illuminates
- Vibrations at idle
Causes
- Malfunction of the cylinder deactivation solenoid valve
- Mechanical damage to the intake valve
- Wiring Harness Problems
- Engine control unit malfunction
- The deactivation mechanism is dirty or jammed
How to Fix
- Check the condition of the deactivation solenoid valve
- Inspect the intake valve mechanism for damage
- Check the integrity of the wiring harness and contacts
- Test the operation of the engine control unit
- Clean or replace the deactivation mechanism if necessary
Related codes
Error P349B by Vehicle Brand
FAQ
What does the P349B code mean?
P349B is an OBD-II diagnostic trouble code that indicates: Cylinder 4 Deactivation/Intake Valve Performance
What causes a P349B error code?
The most common causes of P349B include: Malfunction of the cylinder deactivation solenoid valve; Mechanical damage to the intake valve; Wiring Harness Problems; Engine control unit malfunction.
How do I fix a P349B diagnostic trouble code?
To fix P349B: Check the condition of the deactivation solenoid valve. Inspect the intake valve mechanism for damage. Check the integrity of the wiring harness and contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P349B?
Yes, but get it checked soon
How much does it cost to fix P349B?
The estimated repair cost for P349B is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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