OBD Guide

P0498

EVAP System Vent Valve Control Circuit Low

P0498 is an OBD-II diagnostic trouble code meaning: EVAP System Vent Valve Control Circuit Low. Common causes: faulty evap vent valve, open or short circuit in wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Increased fuel consumption
  • Unstable engine idling

Causes

  • Faulty EVAP vent valve
  • Open or short circuit in wiring harness
  • Problems with power or circuit ground
  • ECU malfunction

How to Fix

  1. Check the integrity of the wiring harness
  2. Check EVAP valve resistance
  3. Check power and ground circuit
  4. Replace faulty EVAP valve if necessary

Related codes

Error P0498 by Vehicle Brand

FAQ

What does the P0498 code mean?

P0498 is an OBD-II diagnostic trouble code that indicates: EVAP System Vent Valve Control Circuit Low

What causes a P0498 error code?

The most common causes of P0498 include: Faulty EVAP vent valve; Open or short circuit in wiring harness; Problems with power or circuit ground; ECU malfunction.

How do I fix a P0498 diagnostic trouble code?

To fix P0498: Check the integrity of the wiring harness. Check EVAP valve resistance. Check power and ground circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0498?

Limited driving only, diagnose soon

How much does it cost to fix P0498?

The estimated repair cost for P0498 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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