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What is the code P0170 Fuel Trim Malfunction (Bank #1) on my 1999 Pontiac Grand Prix?

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What is the code P0170 Fuel Trim Malfunction (Bank #1) on my 1999 Pontiac Grand Prix GFT 3.8L?

Vehicle: 1999 Pontiac Grand Prix GFT 3.8L

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HI there

There are several possible causes for this code. Here is a list 

P0170 - Fuel Trim Malfunction Bank 1
Read more: https://www.autocodes.com/p0170.html

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