OBD Guide

P3479

Cylinder 10 Exhaust Valve Control Circuit Low

P3479 is an OBD-II diagnostic trouble code meaning: Cylinder 10 Exhaust Valve Control Circuit Low. Common causes: solenoid valve malfunction, open or short circuit in the circuit. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Unstable engine operation
  • Power reduction
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Dips during acceleration

Causes

  • Solenoid valve malfunction
  • Open or short circuit in the circuit
  • Poor contact in connectors
  • Engine control unit malfunction
  • Wiring harness damage

How to Fix

  1. Check the condition of the solenoid valve
  2. Check the integrity of the control circuit
  3. Inspect connectors and contacts for oxidation
  4. Check circuit resistance
  5. If necessary, replace faulty components

Related codes

Error P3479 by Vehicle Brand

FAQ

What does the P3479 code mean?

P3479 is an OBD-II diagnostic trouble code that indicates: Cylinder 10 Exhaust Valve Control Circuit Low

What causes a P3479 error code?

The most common causes of P3479 include: Solenoid valve malfunction; Open or short circuit in the circuit; Poor contact in connectors; Engine control unit malfunction.

How do I fix a P3479 diagnostic trouble code?

To fix P3479: Check the condition of the solenoid valve. Check the integrity of the control circuit. Inspect connectors and contacts for oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3479?

Yes, but get it checked soon

How much does it cost to fix P3479?

The estimated repair cost for P3479 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

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