OBD Trouble code

p3tweet · April 13, 2005

My "service engine soon" light came on a couple of days ago. Took the truck ('01 GMC Sierra 5.3L) to Autozone to have the code read.

Code was a P1416 which I understand indicates the problem to be a Secondary Air System port side check valve.

Is there a way to check the valve is failing? Could it not also be an oxygen sensor??

Do I have to take the truck into the dealer to have the code cleared or can I just disconnect the wire from the neg battery terminal?

ANY help will be greatly appreciated!

Indy · April 14, 2005

My "service engine soon" light came on a couple of days ago. Took the truck ('01 GMC Sierra 5.3L) to Autozone to have the code read.
Code was a P1416 which I understand indicates the problem to be a Secondary Air System port side check valve.

Is there a way to check the valve is failing? Could it not also be an oxygen sensor??

Do I have to take the truck into the dealer to have the code cleared or can I just disconnect the wire from the neg battery terminal?

ANY help will be greatly appreciated!

<{POST_SNAPBACK}>

You should post this in "Ask the GM Expert" forum. It is not an oxygen sensor, that would be a code 130-167. It may work to disconnect the battery if the light is bugging you. If the code is cleared all the data which is stored concerning the cause of the problem will be lost.

p3tweet · April 14, 2005

My "service engine soon" light came on a couple of days ago. Took the truck ('01 GMC Sierra 5.3L) to Autozone to have the code read.
Code was a P1416 which I understand indicates the problem to be a Secondary Air System port side check valve.

Is there a way to check the valve is failing? Could it not also be an oxygen sensor??

Do I have to take the truck into the dealer to have the code cleared or can I just disconnect the wire from the neg battery terminal?

ANY help will be greatly appreciated!

<{POST_SNAPBACK}>

You should post this in "Ask the GM Expert" forum. It is not an oxygen sensor, that would be a code 130-167. It may work to disconnect the battery if the light is bugging you. If the code is cleared all the data which is stored concerning the cause of the problem will be lost.

<{POST_SNAPBACK}>

Thanks.

Added to Ask the Expert Section.