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P1441 Diagnostic Trouble Code Discussion for January 2007

EVAP System Flow During Non-Purge Conditions

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Trouble Ticket Help Requests for DTC P1441
Help Request Posted
1998 Isuzu Trooper S 3.5L MIL Lamp on VIN: JACDJ58X6W
P1441: EVAP Vacuum Switch Circuit High Input. ... MIL on, P1441. It looks like it is an open and shut case. The purge valve has already been replaced to no effect, and there is a TSB out #SB00-02-S002 for updated fuel level sensor and PCM calibration to fix false P1441 codes. We installed the replacement...
January 12, 2007