The canister purge valve allows stored fuel vapors in the containment canister to be recycled back into the engine combustion process when necessary.
Symptoms of Wear or Failure
- Check Engine Light may illuminate
- Rougher than normal engine idle
Related Repair Advice
- Evaporative system diagnosis can be difficult and trouble codes can be triggered by sensors and components other than the canister purge valve
- It is not uncommon for bits of charcoal to separate from the charcoal brick inside the canister and cause the canister purge valve to stick in the open or closed position
