0 like 0 dislike
262 views
by

On a Aztec would the upstream of sensor be bad if I was throwing a code of pe 11 it's running to lean

Vehicle: 2001 pontiac Aztec engine 3.4

1 Answer

0 like 0 dislike
by (13.5k points)
HI there,

There can be a few causes for a lean condition, the upstream O2 sensor on bank 1 is one of them. Also, you will want to check and make sure you don't have any vacuum leaks. A vacuum leak at the intake manifold will also cause a lean fuel mixture condition.

Related questions

1 like 0 dislike
2 answers 574 views
0 like 0 dislike
1 answer 326 views
asked Sep 11, 2017 by anonymous
0 like 0 dislike
1 answer 242 views
asked Aug 31, 2017 by anonymous
1 like 0 dislike
2 answers 301 views
0 like 0 dislike
1 answer 881 views

36.2k questions

32.2k answers

1.3k comments

22.8k users

Need A Repair Shop?
Find local automotive repair shops in your area.
Does your car have Safety Recalls? → Check here
...