GS - 4th Gen (2013-2020) Discussion about the 2013 and up GS models

check engine light po157

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Old 01-18-16, 02:02 PM
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khizr23
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Default check engine light po157

its strange this code came up 02 sensor circuit low voltage bank 2 sensor what does that mean? what causes that?
Old 01-19-16, 01:30 PM
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mrpartsman
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thats ur oxygen sensor after the cat there is 2 of them , how many miles u have on the car for that to come up.
Old 01-19-16, 07:05 PM
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khizr23
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29,000 miles
Old 01-19-16, 09:09 PM
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isfdude
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Change the sensor. It might be a bad sensor or the sensor wiring got messed up from something in the road. Make sure you use a denso sensor only. Denso is the oem brand and preform best.
Old 01-20-16, 05:04 AM
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Mike728
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Originally Posted by isfdude
Change the sensor. It might be a bad sensor or the sensor wiring got messed up from something in the road. Make sure you use a denso sensor only. Denso is the oem brand and preform best.
Better yet, take it in and have it looked at under warranty!
Old 01-20-16, 10:20 AM
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bclexus
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Regularly using bad, stale or contaminated gasoline can make an O2 sensor go bad. Make sure you use Premium grade Tier 1 gasoline from a high volume gas station.
Old 01-20-16, 10:54 AM
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isfdude
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If it's a ripped wire warranty will not cover it and the dealer will charge 300+ for replacing that sensor, bring it to a shop first to make sure there are no damaged wires so the dealer won't try to get you.
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