on a 2007 Chevy Equinox, codes, po171, po404, and po405. Any clues? Thanks!

teresatn
135

Asked by Feb 16, 2013 at 02:11 AM about the 2007 Chevrolet Equinox LS

Question type: Maintenance & Repair

on a 2007 Chevy Equinox, codes, po171, po404, and po405. Any clues? Thanks!

4 Answers

Robweiser
755

yes code P0171 is for Fuel system lean on bank 1 (which means bank 1 is the side where Cylinder number 1 is). p0404 is exhaust gas recirculation silonoid control circuit , p0405 is the exhaust gas recirculation position sensor circuit is low voltage. From my 28yrs of being a auto technician these codes are allr related to one problem and its on the EGR CIRCUIT (Exhaust Gas Recirculation) sounds like a vacuum line is off (disconnected),

3 out of 3 people think this is helpful.
teresatn
135

thank you oh so much!!

got_carquestions
90

Did you ever find a vacuum line off? I am having the same codes. I replaced the EGR valve and then the engine light stayed off for about a day and came back on. Any other suggestions?? Thanks!

6 out of 6 people think this is helpful.
foremanc
0

i have an Equinox that will sometimes miss badly but for a brieff period the error codes are P0300, P0403, P0420 AND P0301

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