O2 sensor going out? (P0154)
09-28-2002, 09:41 PM
#1
Staging Lane
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O2 sensor going out? (P0154) Autotapped a friend's car to see what the SES was from, gave code P0154, or "HO2S Circuit Insufficient Activity Bank 2 Sensor 1". Did a little logging and found out that the B2S1 sensor was at a constant 447, every now and then going up or down a couple points. Could his O2 sensor be taking a crap on him? Or is it a wiring problem? Any ideas? His car: 98 A4 z28, light bolt-ons (gears, fipk, borla).
This problem started after he had his tranny rebuilt, so I'm leaning towards something besides a bad sensor.
Thanks,
Drew
'00 Formula WS6
p.s. this thread was pretty informative, but that's all the search returned.
This problem started after he had his tranny rebuilt, so I'm leaning towards something besides a bad sensor.
Thanks,
Drew
'00 Formula WS6
p.s. this thread was pretty informative, but that's all the search returned.
09-28-2002, 09:54 PM
#2
wrencher
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Re: O2 sensor going out? (P0154) Check & see if it is connected, damaged wiring, or a broken o2. Pcm reference voltage is about .44 so the problem probably at the o2.
