Applicable Systems
OBD-II
Symptoms
EVAP purge valve electrical circuit malfunction; ECM cannot control purge valve; valve stuck in last position.
Possible Causes
- Purge valve solenoid open/short
- Purge valve wiring fault
- ECM driver circuit failure
Troubleshooting Steps
- Step 1: Check purge valve solenoid resistance
Resistance within spec - Step 2: Check wiring from ECM to purge valve
Wiring intact - Step 3: Check purge valve fuse
Fuse intact - Step 4: Replace purge valve if solenoid faulty
New valve responds to commands - Step 5: Clear code and verify purge operation
Purge valve operates correctly
How to Reset
Clear with OBD-II scanner after repair.
Common Replacement Parts
- EVAP Purge Valve (OEM spec)
Frequently Asked Questions
- Q: Where is the purge valve located?
Typically near intake manifold or engine bay. Some vehicles have it near the charcoal canister under vehicle. Check service manual for exact location.
Source: SAE J2012 standard DTC list + OBD-II portal
Category: OBD-II