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P0442 Diagnostic Trouble Code Discussion for April 2011

EVAP System Small Leak Detected

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Trouble Ticket Help Requests for DTC P0442
Help Request Posted
2001 Volkswagen Passat GLS 2.8L MIL Lamp on VIN: WVWRH63B11
P0442: small evap leak. smoke tested until smoke came out filter at leak detection pump (LDP). Pinched off line to filter and could not find any smoke. Switched to presure check and ball drops to zero leak and stays there even after 5 minutes. I removed LDP and ohm tested as stated i...
April 12, 2011
2002 Mercedes-Benz S500 5.0L MIL Lamp on VIN: WDBNG75J02
P0442: Efficiency. Test Exhaust Back Pressure Pass,Vehicle Contune to set Catalytic Efficiency dtc along with accelerate dtc any sugestions,fuel trim pass test,tested the mass air flow both at idle and WOT thank you
April 19, 2011
2001 Ford Taurus SE 3.0L MIL Lamp on VIN: 1FAFP3U02G
P0442: very small evap leak detected. Ford experts, I need your expertise in order to find out what is going on. If I remove the purge valve mounted on the canister and block the hole I don't have any leaks while smoke machine activated. However if I put the valve back on I see smoke coming from t...
April 22, 2011