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Maintenance & Repair 350Z up keep and diagnosing/fixing problems

CEL keep coming back

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Old Dec 7, 2019 | 03:41 AM
  #1  
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hadeet
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From: Almere
Default CEL keep coming back

Hi guys,

I have a 350Z (VQ35DE/280hp) from 2006. The CEL is coming back every time after clearing it. Just today again with code P0037.
The car has test pipes and the bank 2, sensor 2 is already replaced. I also had extensions placed for both sensors in the back but didn't make a difference.
Did also the reset for the AF-ratio.
I'm considering to replaces the test pipes with 200cpi sport cats but will this fix the CEL problem. I already bought new sensors (post-cat) which I will replace also together with the sport-cats.
I have the following questions:
1. which 200cpi port cat's would you advice (i'm thinking about the JapSpeed ones)
2. is their a chance that the CEL will come back again after I placed the sport cat's and post-cat lambda's
3. would it not be better to have the ECU reset and/or remapped
Thx.

Last edited by hadeet; Dec 7, 2019 at 04:10 AM.
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Old Dec 7, 2019 | 06:58 PM
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i8acobra
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P0037 is for the heater circuit, has nothing to do with the cat. Check your fuses.
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Old Dec 8, 2019 | 12:57 AM
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hadeet
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From: Almere
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Originally Posted by i8acobra
P0037 is for the heater circuit, has nothing to do with the cat. Check your fuses.
Thx for reply. Which fuse(s) do you mean and what do I need to check?
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