Code p0171 fix

Asked by Guru1M5PF Sep 28, 2019 at 03:03 PM about the 2006 Toyota RAV4 Sport

Question type: Maintenance & Repair

I had code p0171 pop up on scanner I replaced old
muffler that had holes, code came back. What else
could it be?

2 Answers

F_O_R answered 4 years ago

A leaky muffler would probably not cause this code. If it is an exhaust leak it would be upstream of the O2 sensors. A vacuum leak, bad O2 sensor or other things could cause this code to pop up.

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