Question about 1997 Chevrolet Camaro

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Code po161 My check engine is on and the code is 161,135,141.

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P0161: heater circuit malfunction in secondary 02 in bank 2
P0135 Bank 1 Sensor 1 Heater Performance Problem
P0141: HO2S Heater Performance Bank 1 Sensor 2.
02 sensors and or cat converter is issue

Posted on Mar 26, 2014

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Posted on Jan 02, 2017

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97 ford f150 lariat codes PO161 PO171 PO174 & P1450 WHERE DO I START ?


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Is there fusies goijg to you o2 sensor if so could that make my 2002 chev truck lack power got alot of codes po157 po101 po161 po 135 and po300 any help


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CODE PO161 IS REGARDING OXYGEN SENSOR BANK2 SENSOR2 WHICH IT IS LOCATED IN THE BOTTOM RIGHT SIDE OF THE CAT ON THE OUTPUT OF THE CAT.REGARDING CODE P1135 IS FOR AIR FUEL RATIO OXYGEN SENSOR MALFUNCTION BANK1 SENSOR 1. MY OPINION CHANGE THE SENSOR BANK 2 AND RESET THE FAULT USING A SCANNER AND DRIVE IT. I BELIEVE WILL SOLVE THE PROBLEM.

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Po 161 and p1135


PO161 IS FOR OXYGEN SENSOR BANK2 WHICH IS LOCATED IN THE BOTTOM RIGHT OF THE CAT (PASSENGER SIDE ) ON THE OUTPUT OF THE CAT..
P1135 AIR FUEL RATIO OXYGEN SENSOR MALFUNCTION BANK1-IS NOT NEED TO RENEW IT. CHECK WHETHER YOU HAVE THE AIR FILTER CLOGGED,OR WEAK SPARK CABLES OR WORN SPARK PLUGS,AS THESE ARE THE CULPRITS WHICH CAUSING THE AIR FUEL MIXTURE BE OUT OF RANGE AND CAUSE THE OXYGEN SENSOR TO FAIL. MY LAST OPINION CHANGE THE OXYGEN SENSOR BANK 2 ( PO161)AND RESET THE CHECK ENGINE LIGHT USING A SCANNER AND DRIVE IT. IF NO LIGHT COMES ON SHOULD BE THE ONLY FAULT.

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Nothing seems to be happening at this time except the check engine light comes on. We checked it with the OB2 and received the PO161 code and erased it, it came back on in a day.


That code is probably for the tundra, I see alot of those with that problem, thankfully toyota will cover the front o2 sensor under warranty however not the back "bank 2 sensor 2"

When replacing this be sure to use a DENSO sensor to ensure it will last as long as possible.

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My expedition will not idle after start up unless I give it throttle it will die very rich smell coming from exhaust It started out very intermitten now it dies every time I ran a code reader tool but...


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Fix code po161 on 95 mustang 3.8


P0161(O2 Sensor Heater Circuit (Bank 2 Sensor 2). ...

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