Code P1171

[Jolly Roger VX'er]

Oh, and many thanks to Tone for the PDF! Invaluable info for all!

Jolly Roger VX'er, so based on your experience, changing the 02 sensor cleared both codes?

Am I correct in thinking the 2nd sensor in both banks is the post cat?

Best,

no...i never had to fool with the oxygen sensors. I just had to try cleaning the MAF...then when it didn't help...I replaced the MAF.

My MAF turned out to be bad so cleaning didn't help. But, at $150 for a MAF..why not try cleaning it first using some CRC MAF spray for like $4.

It was explained to me that sometimes a "real" problem will spawn some other codes that really are not the problem.

In this case..the "real" problem was the MAF sensor....which spawned a "false" code of P0157 too.