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Thread: Y is it still doing this?
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08-08-2008, 08:58 AM #1
Y is it still doing this?
Well i had a service engine soon light for an P0155 (oxygen sensor heater circuit malfunction pre-converter sensor right bank) So i replaced both the passanger and driver side front bank oxygen sensors.....i took it to get the code checked and it is still saying P0155 , plus the exhaust gas recirculation, insufficient flow detected (but that's because of the ls6 intake) do i need to reset my pcm or something for it to clear the o2 sensor code???
2000 Arctic White trans am, ws6 hood, ws6 air box, slp lid, slp smooth bellows, slp loudmouth exhaust,shift kit, rebuilt trans, LS6 intake, 3.73 gears, Shaner S3 p/p throttle body, and a tune . SFC. C6 ZO6 rims 18" in back 17" in front. Drilled and slotted rotors.
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08-08-2008, 10:18 AM #2
After putting in those parts I would always reset the PCM to clear the code. At least thats what I have always done.
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08-08-2008, 10:25 AM #3
Reset the code, with either a scan tool, diablo etc or by disconnecting the neg bat terminal for a bit. After driving it through a full cycle you shall see if its fixed.
J2001 SS, Its not the car its the Driver that matters....
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08-08-2008, 10:46 AM #4
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- Jul 2005
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- Jacksonville, FL
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How long ago did you replace them? The 02 heater diagnostic only runs on a cold start, once per ignition cycle - needs 3 consecutive tests (and pass) to turn the MIL off. I'd just reset the PCM and see what happens.
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08-08-2008, 11:17 AM #5
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08-08-2008, 11:17 AM #6
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08-08-2008, 11:18 AM #7
what exactly do you mean by full cycle?
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08-08-2008, 11:18 AM #8
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08-08-2008, 11:25 AM #9
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08-08-2008, 11:32 AM #10
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You can also reset it this way:
Turn key on, don't start car
Pull PCM BATT and PCM IGN fuses in engine compartment
Wait about 5 min
Turn ignition off
Replace fuses
Also resets the readiness tests and will take a few minutes to relearn the idle.
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08-08-2008, 11:37 AM #11
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08-08-2008, 12:19 PM #12
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08-08-2008, 04:48 PM #13
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08-08-2008, 07:57 PM #14
did the light go out and come back on or did it stay on? I'm with the other guys....just need to clear the code and put some drive time on it. You could also drive it and it'll clear itself after it runs and doesn't fail a pre-set amount of times.
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08-09-2008, 07:45 AM #15
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08-09-2008, 09:33 AM #16
I would imagine it did but I would take it and have it scanned to be sure. If your egr is missing it'll definitely come on for that but I'd read those codes to make sure that's all you have.
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08-09-2008, 10:27 AM #17
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08-09-2008, 01:24 PM #18
IT FINALLY CLEARED!!! Thanks to everyone that put there .02 in this thread........~Chris
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08-09-2008, 01:59 PM #19
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Good deal. Have the EGR codes turned off permanently so you won't be starring at a constant SES, and not knowing if/when something else is going on.
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