Got a P0446 H C code, how to proceed?

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Nov 30, 2024 | 02:02 PM

#21

C5 Diag

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From: Cape Coral, Florida

Quote:

Originally Posted by Alley Oop

If at all possible, I try to buy made in the USA, unfortunately not always available.

The sensor I ordered from Amazon has the same part no. as the original AC Delco and it is made in Singapore, Malaysia. At least it is not made in China.

A LOT of Amazon parts are counterfeit depending who you purchased it from !!

Nov 30, 2024 | 04:32 PM

#22

Alley Oop

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From: west coast of Canada

Quote:

Originally Posted by C5 Diag

A LOT of Amazon parts are counterfeit depending who you purchased it from !!

Thanks for the info. From here on in I'll check RockAuto for parts. The sensor that I ordered is exactly the same as the one pictured.

Nov 30, 2024 | 04:34 PM

#23

C5 Diag

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From: Cape Coral, Florida

Quote:

Originally Posted by Alley Oop

Thanks for the info. From here on in I'll check RockAuto for parts. The sensor that I ordered is exactly the same as the one pictured.

Just because it’s new and the same as the Amazon one you ordered doesn’t mean it’s good.

Nov 30, 2024 | 04:48 PM

#24

Alley Oop

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From: west coast of Canada

Quote:

Originally Posted by C5 Diag

Just because it’s new and the same as the Amazon one you ordered doesn’t mean it’s good.

In future, I'll be looking the the GM genuine parts.

Nov 30, 2024 | 04:54 PM

#25

C5 Diag

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Joined: Sep 2013

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From: Cape Coral, Florida

Quote:

Originally Posted by Alley Oop

In future, I'll be looking the the GM genuine parts.

If not AC Delco any part from a Tier 1 supplier like Delphi, Denso,Bosch, Standard Motor Products.

Last edited by C5 Diag; Nov 30, 2024 at 05:08 PM.

Dec 2, 2024 | 05:38 PM

#26

Alley Oop

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Joined: Dec 2013

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From: west coast of Canada

Quote:

Originally Posted by C5 Diag

If not AC Delco any part from a Tier 1 supplier like Delphi, Denso,Bosch, Standard Motor Products.

I installed the FTP sensor today. No more check engine light. The scanner reads 1.41 V and -0.01 KPa.
Re-installing the quarter panel liner is giving me a challenge. I'm going to try the heat gun.
Thanks for all of your help.