p0498
Moderate
Honda · SUVs
EVAP Vent Valve Control Circuit Low
Quick Answer
Error code P0498 on your Honda SUVs means: EVAP Vent Valve Control Circuit Low. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
  1. Faulty EVAP vent shut valve
  2. Short to ground in the vent valve control circuit wiring
  3. Corroded or water-damaged connector at the vent valve
  4. Failed ECM/PCM vent valve driver circuit (rare)
How to Fix It
1
Locate the EVAP vent valve near the charcoal canister (typically mounted under the vehicle near the rear)
2
Disconnect the vent valve connector and check for short to ground in the harness wiring using a multimeter
3
Measure the vent valve solenoid resistance; compare to Honda specification (typically 22-30 ohms)
4
Inspect the connector for corrosion, water intrusion, or spread terminals
5
Replace the vent valve assembly if solenoid resistance is out of specification
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
EVAP vent shut valve
Wiring harness repair connectors
Charcoal canister (if contaminated)
Related Error Codes
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