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Cayenne 05 3.2 v6 with fault codes P0421 and P0036

Y

Ymaks

New member
Hello, i have an 05 Cayenne 3.2 petrol v6 with the fault codes P0421 (warm up catalyst efficiency below threshold bank 1) and P0036 (HO2S heater control circuit bank 1 sensor 2). Just over 65000 miles on the clock.

I believe the codes indicates i need to change the O2 lambda sensor, post catalyst for cylinders 1-3. I think the OEM number for that sensor is 95560613610.

Would it be possible that i need to change the coils and plugs or would it definitely be the O2 sensor? And any way of confirming bank 1, sensor2 is the post cat, cylinders1-3 please? Thank you

 
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