getting a p170 code reading.what is problem & how much should the repair cost be on 2001 Cadillac Seville SLS

is this a air vacumn leak? or fuel trim system lean & waht is required to fix

by in Harvest, AL on September 10, 2012
2 answers 2 comments
ANSWER by on September 10, 2012
double ck the code po171 is a lean code can't find po170
COMMENT by on September 10, 2012
I understand p170 or p171 is same reading.....
COMMENT by on September 10, 2012
lean bank one could be vac leak or inj issue or fuel pressure issue. can you read data stream with the scanner u have
ANSWER by on January 24, 2016
P0170 means there was a malfunction in the computer's control of the air:fuel ratio. It also indicates that the fuel trims reached their limit of adding fuel while trying to compensate for a actual or perceived rich condition. When the fuel trims reach their rich correction limit, the PCM (Powertrain Control Module) sets a P0170, indicating a problem or malfunction in the fuel trims. It may also have a P0173 referring to the same malfunction but on bank two.

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