MAF problem

CHAD WALKER

MEMBER
2010 TOYOTA CAMRY
TURBO
2WD
AUTOMATIC
104,000 MILES

Car was running sluggish and check engine light came on. I went to get a free code pulled and it said Air Mass sensor. So I replaced it. Then it did it again. I took a look and saw the air intake hose just under the windshield had come off the resonator. I put that back in and it ran much better but, the check engine light came back on. Now the codes say, P0171 system too lean bank 1, p0101 mass air flow circuit range/performance problem (this is on there twice). It also says it is a MAF sensor wiring. I am pretty good at fixing stuff on my own if you could give me any tips. I have not seen any holes in the hose or anything like that. My car has 104,000 miles. My car has an automatic transmission.

2 Replies

SATURNTECH9

MECHANIC
30,869 POSTS

For the p0171 I would suspect a vacuum leak. The best way to find a vacuum leak is to use smoke.

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Saturday, September 10th, 2016 AT 8:39 PM

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

I just found this post, you are correct the wiring is the problem which will cause thes codes, here is a guide to help and the engine wiring diagrams so you can see which wires to test:

https://www.2carpros.com/articles/how-to-check-wiring

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