P3477
Cylinder 10 Exhaust Valve Control Circuit/Open
P3477 is an OBD-II diagnostic trouble code meaning: Cylinder 10 Exhaust Valve Control Circuit/Open. Common causes: open or short circuit in wiring harness, vvt solenoid valve malfunction. Estimated repair cost: $17–89.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine idling
- Possible misfire in cylinder 10
Causes
- Open or short circuit in wiring harness
- VVT solenoid valve malfunction
- Poor contact in the connector
- Problems with the engine control unit
- Mechanical damage to valve chain
How to Fix
- Check the integrity of the wiring harness to the 10th cylinder
- Test valve solenoid resistance
- Inspect connectors for corrosion or damage
- Check voltage at valve connector
- If necessary, replace the solenoid or repair the wiring.
Related codes
Error P3477 by Vehicle Brand
FAQ
What does the P3477 code mean?
P3477 is an OBD-II diagnostic trouble code that indicates: Cylinder 10 Exhaust Valve Control Circuit/Open
What causes a P3477 error code?
The most common causes of P3477 include: Open or short circuit in wiring harness; VVT solenoid valve malfunction; Poor contact in the connector; Problems with the engine control unit.
How do I fix a P3477 diagnostic trouble code?
To fix P3477: Check the integrity of the wiring harness to the 10th cylinder. Test valve solenoid resistance. Inspect connectors for corrosion or damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P3477?
Limited driving only, diagnose soon
How much does it cost to fix P3477?
The estimated repair cost for P3477 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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