P0442
EVAP System Leak Detected (Small Leak)
2002-2004 Audi A6 3.0L V6
Low SeverityPowertrainGeneric (SAE)
Description
A small leak has been detected in the EVAP system.
Symptoms
- Check Engine Light
- Slight fuel smell possible
Common Causes
- Loose gas cap
- Small crack in EVAP hose
- Faulty purge or vent valve seal
- Charcoal canister micro-crack
- Fuel tank leak
Diagnostic Steps
- Tighten gas cap and clear code
- If returns, perform smoke test on EVAP system
- Inspect all EVAP hoses
- Check purge and vent valve seals
- Inspect charcoal canister
Repair Notes
Check gas cap first. Small leaks often require smoke test to find.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0442 on Other Vehicles
Common Questions
What does code P0442 mean on a 2002-2004 Audi A6?
P0442 stands for "EVAP System Leak Detected (Small Leak)". A small leak has been detected in the EVAP system.
What are the symptoms of P0442 on a Audi A6?
Common symptoms of P0442 include: Check Engine Light, Slight fuel smell possible.
What causes P0442 on a 2002-2004 Audi A6?
Common causes of P0442 include: Loose gas cap, Small crack in EVAP hose, Faulty purge or vent valve seal, Charcoal canister micro-crack, Fuel tank leak.