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P1111 Diagnostic Trouble Code Discussion for July 2014

IAT Sensor Circuit Intermittent High Voltage

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Trouble Ticket Help Requests for DTC P1111
Help Request Posted
2004 Volkswagen Passat GLS 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWPD63B64
P1111: system too lean. Help VW techs! This Passat has a p1111 lean code- we found the crankcase vent valve at the rear of the cylinder head and oil dipstick leaking vacuum. replaced and rechecked - we have 12 inches of vacuum in the crankcase and have been unable to locate the cause...
July 18, 2014