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P1627 Diagnostic Trouble Code Discussion for November 2007

Analog To Digital (A/D) Performance

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Trouble Ticket Help Requests for DTC P1627
Help Request Posted
1999 Isuzu Rodeo S 2.2L MIL Lamp on VIN: 4S2CK58D5X
P1627: PCM Analog To Digital Conversion Error. ... this one, customer came in for smog, check engine light was on codes P0107 and P1627 Pulled, tested for 5 volt v-ref at map sensor, tps, egr, thermo switch on condensor, all show 5 volts, check all v-ref ckts for short to power, no short, check all 5-volt ...
November 20, 2007