P1494 Diagnostic Trouble Code Discussion for September 2012
EVAP Leak Detection Pump Switch Or Mechanical Fault
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| Help Request | Posted | |
| 2001 Dodge Ram 1500 Laramie 5.2L Hesitation, MIL Lamp on VIN: 3B7HF13Y91 P1494: LDP switch or mechanical fault. This one is driving me crazy. After running Mitchell's flow chart for "shorted to voltage codes" and preforming some tests that aren't in the book, everything pointed to a bad PCM. New PCM - No fix. Tried different O2 sensors - No fix. PCM data reads 4... |
September 14, 2012 |
