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Old 09-10-2006, 06:52 PM   #1
william41cn
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Member#: 93558
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Default could anyone help me?

engine check light was on
http://forums.nasioc.com/forums/show...5#post15194895
P0136 o2 circuit malfunction
front one sensor changed already... but light is still on
my car is 98 gc
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Old 09-10-2006, 07:14 PM   #2
william41cn
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i did the search, that is the rear oxygen sensor
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Old 09-10-2006, 07:20 PM   #3
GlobalWaste
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Is your car catless?
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Old 09-10-2006, 07:21 PM   #4
Necromancer
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GC4 -> GGA -> GM6
Yeah, that's about right.

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I have a spare that I can sell you if you want...
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Old 09-10-2006, 07:32 PM   #5
william41cn
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Quote:
Originally Posted by amarpauld View Post
Is your car catless?
no both cats are there... i changed the front one, but it should be the rear o2 sensor's problem, so i gotta change the rear one, coz i scanned 2 times, it reads p0136, the rear sensor malfunction
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Old 09-10-2006, 08:20 PM   #6
fujiwara_yingyu
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Join Date: May 2006
Chapter/Region: VIC
Location: Richmond
Vehicle:
2009 CFRP GR WRB STI
2006 EVO IX MR

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my friend told me:

P0136 is circuit problem, like broken wires or dead sensor

P0139 is more like a dead sensor

i wouldn't replace rear O2 for P0136 but i would for P0139

rear O2 sensor doesn't break easily

it's more like maybe the catalytic's efficient

or whoever installed the header ****ed up the wirings

header might trigger a front O2 problem

u have to trace for broken wire or loose connection
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