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P1494 Diagnostic Trouble Code Discussion for July 2004

EVAP Leak Detection Pump Switch Or Mechanical Fault


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Trouble Ticket Help Requests for DTC P1494
Help Request Posted
1998 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: IJ4GZ58S2W
P1494: EVAP Leak Detection Pump Switch Or Mechanical Fault. ... drivability problems. code # p1494. checked with jeep to see if under 8/80. they said evap controls are 3/36. shop owns drb iii, attempted to do evap test and could not. found t.s.b on refalsh to allow this test. sent to jeep for reflash and at that time t...
July 01, 2004
1998 Jeep Grand Cherokee Laredo 4.0L MIL Lamp on VIN: IJ4GZ58S2W
P1494: EVAP Leak Detection Pump Switch Or Mechanical Fault. ... drivability problems. code # p1494. checked with jeep to see if under 8/80. they said evap controls are 3/36. shop owns drb iii, attempted to do evap test and could not. found t.s.b on refalsh to allow this test. sent to jeep for reflash and at that time t...
July 02, 2004