P3494
Cylinder 12 Exhaust Valve Control Circuit Performance
P3494 is an OBD-II diagnostic trouble code meaning: Cylinder 12 Exhaust Valve Control Circuit Performance. Common causes: open or short circuit in control circuit, vvt solenoid valve malfunction. Estimated repair cost: $17–89.
Symptoms
- Engine power drop
- Unstable engine operation
- Increased fuel consumption
- Check Engine Light Illuminates
- Possible misfires
Causes
- Open or short circuit in control circuit
- VVT solenoid valve malfunction
- Poor electrical contact in the connector
- Mechanical stuck exhaust valve
- Engine control unit malfunction
How to Fix
- Check valve control circuit integrity
- Check the resistance and operation of the solenoid valve
- Inspect and clean electrical contacts
- Check voltage on control circuit
- If necessary, replace the faulty valve or wiring harness.
Related codes
Error P3494 by Vehicle Brand
FAQ
What does the P3494 code mean?
P3494 is an OBD-II diagnostic trouble code that indicates: Cylinder 12 Exhaust Valve Control Circuit Performance
What causes a P3494 error code?
The most common causes of P3494 include: Open or short circuit in control circuit; VVT solenoid valve malfunction; Poor electrical contact in the connector; Mechanical stuck exhaust valve.
How do I fix a P3494 diagnostic trouble code?
To fix P3494: Check valve control circuit integrity. Check the resistance and operation of the solenoid valve. Inspect and clean electrical contacts. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P3494?
Limited driving only, diagnose soon
How much does it cost to fix P3494?
The estimated repair cost for P3494 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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