code question

Asked by dmccra Jan 21, 2014 at 02:29 AM about the 2005 Chevrolet Cobalt LS Sedan FWD

Question type: General

I have a 2005  chevy  cobalt 2.2 engine, it has 104,000 mile. Every once in a while, maybe about once a yr. My engine check light come on. The code reader
reads read 2 codes 171,po171 The engine runs great though, so I clear the code
with the code reader then the engine check light  goes off It stay off for about another yr. The research I did points to the maf sensor. What is your opinion on this

3 Answers
39,775

James answered 10 years ago

maybe clean the maf with a non harsh cleaner ,just cuz it is always good to do .that 171 code says a lean mixture ,very common on that engine the defect is the design as quite often since some engineers must have been dumbed down the last few decades try a intake cleaner seafoam may do some cleaning,the stock maf is not quite matched to the pcm may need updated .wonder how much money wasted on this garb.

Mark helpful
39,775

James answered 10 years ago

back to dealer shop and download new pcm software , called reflash

1 people found this helpful.
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