P0455low severityPowertrain
EVAP System Leak Detected (Gross Leak)
on 2011 Audi TT 2.0L Turbo I4 · AWD
What this code means
A large leak has been detected in the EVAP system.
Symptoms
- Check Engine Light
- Fuel smell
- Failed emissions
Common causes
- Gas cap missing or very loose
- Disconnected EVAP hose
- Cracked charcoal canister
- Large hose crack
- Fuel filler neck crack
Diagnostic steps
- Check gas cap - may be missing or damaged
- Visually inspect all EVAP hoses
- Smoke test EVAP system
- Check charcoal canister
- Inspect fuel filler neck
Repair notes
Large leaks are usually easy to find. Check gas cap first.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1