Cell Code Issue All Opinions Welcome!
#1
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Cell Code Issue All Opinions Welcome!
Hello everyone
I could use a little help diagnosing a cell issue. I have a 08 with PPE Headers, RR Intake, JoeZ exhaust (with Magnaflow cats welded in before the O2s), and a RR tune. All mods have been on the car for over 2 years with no issues.
Over the past 10 months, at random times, I keep receiving the same cell codes
P0136 (Bank 1 Sensor 2) O2 sensor circuit malfunction
P0137 (Bank 1 Sensor 2) O2 sensor circuit low volts
P0139 (Bank 1 Sensor 2) O2 sensor CKT slow response
P0156 (Bank 2 Sensor 2) O2 sensor circuit malfunction
P0157 (Bank 2 Sensor 2) - O2 sensor circuit low volts
P0159 (Bank 2 Sensor 2) - O2 sensor CKT slow response
Obviously the codes point to sensor 2 on both sides, but what are the odds that both O2 sensors go out at the same time? Could it be the O2 conditioner for the PPE headers? Could it be the RR Tune? Or maybe, both O2 sensors did go out at the same time?
What do you guys think? Any help is appreciated!
Over the past 10 months, at random times, I keep receiving the same cell codes
P0136 (Bank 1 Sensor 2) O2 sensor circuit malfunction
P0137 (Bank 1 Sensor 2) O2 sensor circuit low volts
P0139 (Bank 1 Sensor 2) O2 sensor CKT slow response
P0156 (Bank 2 Sensor 2) O2 sensor circuit malfunction
P0157 (Bank 2 Sensor 2) - O2 sensor circuit low volts
P0159 (Bank 2 Sensor 2) - O2 sensor CKT slow response
Obviously the codes point to sensor 2 on both sides, but what are the odds that both O2 sensors go out at the same time? Could it be the O2 conditioner for the PPE headers? Could it be the RR Tune? Or maybe, both O2 sensors did go out at the same time?
What do you guys think? Any help is appreciated!
#2
Tech Info Resource
iTrader: (2)
The ECM occasionally sends extra fuel down the exhaust to measure catalyst efficiency. If the sensor detects no change, it sets a DTC. This is done intentionally to make it harder to fool the ECM into believing cats are present and working when they are not. There's a pretty extensive write up on this in the Factory Service Manual.
#3
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Thread Starter
The ECM occasionally sends extra fuel down the exhaust to measure catalyst efficiency. If the sensor detects no change, it sets a DTC. This is done intentionally to make it harder to fool the ECM into believing cats are present and working when they are not. There's a pretty extensive write up on this in the Factory Service Manual.
#4
Pole Position
The RR tune should've eliminated the CEL for cats and there shouldn't have been any need for a O2 conditioner with the tune. I think I remember a while back someone was having issues because he had the O2 conditioner hooked up at the same time with the tune and it was causing issues with the CEL coming on?
#5
The RR tune should've eliminated the CEL for cats and there shouldn't have been any need for a O2 conditioner with the tune. I think I remember a while back someone was having issues because he had the O2 conditioner hooked up at the same time with the tune and it was causing issues with the CEL coming on?
is there a reason for OP to run both?
#6
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Thread Starter
The RR tune should've eliminated the CEL for cats and there shouldn't have been any need for a O2 conditioner with the tune. I think I remember a while back someone was having issues because he had the O2 conditioner hooked up at the same time with the tune and it was causing issues with the CEL coming on?
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