Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

p0137 CEL

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Old Mar 6, 2008 | 07:00 AM
  #1  
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p0137 CEL

what is the p0137 code?
Old Mar 8, 2008 | 04:35 PM
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low voltage to rear o2 sensor. ive had this code forever. every time i reflash it comes back within 100 miles so i just dont bother any more.
Old Mar 8, 2008 | 08:04 PM
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so its no big deal?
Old Mar 8, 2008 | 08:06 PM
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check the ground on your rear o2 sensor.
Old Mar 8, 2008 | 08:44 PM
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you ignore the code? if your rear sensor is bad..... wouldnt you be reading AFR's incorrectly?
Old Mar 8, 2008 | 11:13 PM
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I thought the rear o2 sensor was in the downpipe.

usually i get no CEL code, but sometimes i get the 0137.
Old Mar 9, 2008 | 10:11 AM
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it is in the downpipe, most obd2 systems i know use both to determine AFR's..... if one is bad, then your engine shouldnt be running correctly
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