P3420
Cylinder 3 Deactivation/Intake Valve Control Circuit High
P3420 is an OBD-II diagnostic trouble code meaning: Cylinder 3 Deactivation/Intake Valve Control Circuit High. Common causes: vvt solenoid valve malfunction, open or short circuit in wiring harness. Estimated repair cost: $17–89.
Symptoms
- Uneven engine operation
- Power Loss
- Increased fuel consumption
- Check Engine Light Is On
- Misfire in cylinder 3
Causes
- VVT solenoid valve malfunction
- Open or short circuit in wiring harness
- Poor contact in connectors
- Engine control unit malfunction
- Mechanical problems of the timing system
How to Fix
- Check the condition of the solenoid valve of cylinder 3
- Check the integrity of the wiring harness and connectors
- Measure the resistance of the control circuit
- Check the operation of the control unit
- If necessary, replace faulty components
Related codes
Error P3420 by Vehicle Brand
FAQ
What does the P3420 code mean?
P3420 is an OBD-II diagnostic trouble code that indicates: Cylinder 3 Deactivation/Intake Valve Control Circuit High
What causes a P3420 error code?
The most common causes of P3420 include: VVT solenoid valve malfunction; Open or short circuit in wiring harness; Poor contact in connectors; Engine control unit malfunction.
How do I fix a P3420 diagnostic trouble code?
To fix P3420: Check the condition of the solenoid valve of cylinder 3. Check the integrity of the wiring harness and connectors. Measure the resistance of the control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P3420?
Yes, but get it checked soon
How much does it cost to fix P3420?
The estimated repair cost for P3420 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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