I have a pontaic g6 2006 and the code is p0171 I already replace the o2 sensor and mass air sensor and looked for a vacume leak and found nothing. Whenever the code on my car has a hard time starting

50

Asked by Aug 22, 2015 at 08:55 PM about the 2006 Pontiac G6 Base

Question type: Maintenance & Repair

2 Answers

65,955

You have an overly lean air/fuel mixture. Check for a vacuum leak or exhaust leak ahead of the upstream O2 sensor. HTH. -Jim

50

Oh okay I was thinking it was a fuel issue since I just had my fuel pump replaced

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