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Discussion Starter · #1 ·
I have an 04 Z06 and recently I did a head / cam swap with Kooks headers and off road pipe. The rear O2 sensors are disabled and the front O2s are active. The codes I am throwing are "P0136HC" and "P0156HC". In the codes list by Maven it jumps from a "P0135" to a "P0137" and the same for the "P0156" code, it jumps from "P0155" to "P0157". If you have the reason this is not in the list, I sure would like to know. I have to think it has something to do with the O2 sensors going cold because it happens when the engine in warmed up and I have to sit at a red light for more than a few minutes.
I also noticed the exhaust takes on a "rich " smell when the ck engine light comes on and these codes are present.
Thanks
DD
 

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DC PIT CREW BOSS
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Both of them are for the H02s circuit which is the 02 sensors. This is a list of relevant codes

DTC P0131 or P0151
HO2S Circuit Low Voltage

DTC P0132 or P0152
HO2S Circuit High Voltage

DTC P0133 or P0153
HO2S Slow Response

DTC P0134 or P0154
HO2S Circuit Insufficient Activity

DTC P0135, P0141, P0155, or P0161
HO2S Heater Performance

DTC P0136 or P0156
HO2S Circuit

DTC P0137 or P0157
HO2S Circuit Low Voltage

DTC P0138 or P0158
HO2S Circuit High Voltage

DTC P0140 or P0160
HO2S Circuit Insufficient Activity



BTW, I like you choice in Vettes:laughing:
 

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RkSports makes O2 sensor plugs that tell the computer they are working normally. Many people purchase them if they remove the cats. Very easy install.they plug right in to the sensors.www.rksport.com
 

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Discussion Starter · #4 ·
Thanks Guys I am happy with the performance of the upgrades and the the sound with headers and X pipe through stock muff'lers. I just need to get this problem fixed and all will be well.
42 years of wating for one like this but well worth the wait!
Punisher, just got back from RK sport site and didn't find what you were describing, do I need to contact them? I didn't see them listed under Performance or Universal Performance.


DD
 

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They are shown in there catalog.I am at work right now,but I can get you a part number this afternoon
 

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OK ,02 simulators. RKSPORT part # 04090229 . Ouch $129.95 each. That hurts
 

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Jegs has simulators too. Not sure if they are for vette,but they are cheaper.Its worth looking in to.
 
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