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Daryl, Shop Owner, Certified Mechanic
Category: Car
Satisfied Customers: 12549
Experience:  28 years experience, Master Mechanic
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2007 Pontiac Grand PrixCheck Engine Code:171 &717???

Customer Question

2007 Pontiac
Grand Prix
Check Engine Code:
171 &
Submitted: 5 years ago.
Category: Car
Expert:  Daryl replied 5 years ago.
P0717 is a input speed sensor code which is usually caused by the sensor it self but could be a wiring problem, the P0171 is a lean condition code which is usually caused by either a dirty or bad Mass air flow sensor or a vacuum leak at some point on the engine.