What this code means

The ECU detected a short to ground in the tank vent valve circuit. This valve controls airflow into the EVAP canister and its malfunction affects fuel vapor management.

Symptoms

• Check Engine Light
• Fuel vapor odor
• Failed emissions test

Common causes

• Wiring shorted to ground
• Faulty tank vent valve
• Connector damage
• Water intrusion at connector

Diagnostic steps

1. Test vent valve resistance
2. Inspect wiring for ground shorts
3. Check connector for water intrusion
4. Test ECU driver output

Repair notes

Repair the wiring short to ground or replace the tank vent valve.

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