DTC P0442 Audi
Evaporative Emission System Leak Detected (Small Leak)
Evaporative Emission System Leak Detected (Small Leak)
Description
Time after engine start, 7–1200 Sec. ECT, 4.5-105° C IAT, > 4.5-95.3° C IAT drop after engine start, < 5.25 K Intake manifold vacuum, >140 hPa Altitude, <2700 m Vehicle speed, 1st time 15, afterwards 0 km h Selected gear, Any drive Restart temperature difference, >48 K Evap purge valve, Closed LDP, Activated Delta ambient pressure, <5 hPa OR Engine load, Not <30.8% AND Delta vehicle speed, Not > -1.3 km h
Cause and Solution
Check EVAP valve resistance
Check for signal, voltage and ground
Check harness for open or short and connectors for damage
Check ECM power supply relay
Replace EVAP valve
Video Guide
Diagnostic Info
- DTC Code: P0442
- Brand: Audi