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P1508 Diagnostic Trouble Code Discussion for December 2007

Idle Speed Low - IAC System Not Responding


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Trouble Ticket Help Requests for DTC P1508
Help Request Posted
2002 Porsche 911 Turbo 3.6L Hesitation, Stall, MIL Lamp on VIN: WP0AB29902
P1508: Torque comparison - signal implausable. Car was towed in. The owner described it like boost hose coming off. We checked those and they are all secure. It starts and dies as the post start enrichment leans out. The P1250 code comes back immediately.Has anyone seen this combo before. I suspect the MAF...
December 17, 2007
2002 Porsche 911 Turbo 3.6L Hesitation, Stall, MIL Lamp on VIN: WP0AB29902
P1508: Torque comparison - signal implausable. Car was towed in. The owner described it like boost hose coming off. We checked those and they are all secure. It starts and dies as the post start enrichment leans out. The P1250 code comes back immediately.Has anyone seen this combo before. I suspect the MAF...
December 17, 2007