P3438
Cylinder 5 Exhaust Valve Control Circuit Performance
P3438 is an OBD-II diagnostic trouble code meaning: Cylinder 5 Exhaust Valve Control Circuit Performance. Common causes: open or short circuit in control circuit, vvt solenoid valve malfunction. Estimated repair cost: $17–89.
Symptoms
- Unstable engine operation
- Power reduction
- Increased fuel consumption
- Misfire in cylinder 5
- Check Engine Light Is On
Causes
- Open or short circuit in control circuit
- VVT solenoid valve malfunction
- Exhaust valve mechanical problems
- Wiring Harness Problems
- Engine control unit malfunction
How to Fix
- Check the integrity of the control circuit
- Check the operation of the VVT solenoid valve
- Inspect the wiring harness for damage
- Check the mechanical condition of the exhaust valve
- If necessary, replace faulty components
Related codes
Error P3438 by Vehicle Brand
FAQ
What does the P3438 code mean?
P3438 is an OBD-II diagnostic trouble code that indicates: Cylinder 5 Exhaust Valve Control Circuit Performance
What causes a P3438 error code?
The most common causes of P3438 include: Open or short circuit in control circuit; VVT solenoid valve malfunction; Exhaust valve mechanical problems; Wiring Harness Problems.
How do I fix a P3438 diagnostic trouble code?
To fix P3438: Check the integrity of the control circuit. Check the operation of the VVT solenoid valve. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P3438?
Yes, but get it checked soon
How much does it cost to fix P3438?
The estimated repair cost for P3438 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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