engine light code P0171

[singdasam]

hi guys pls help need to clear this for my inspection . i m in NYC . i have a engine light with code P0171 (system too lead. bank 1 )

 

[singdasam]

Help anyone ???

 

[hornsfan10609]

Mine has been throwing that code for a long time on and off with no apparent actual problems.

 

[YlwMSP]

Do you have a SSAFC? I recently just had the P0171 code, and it was my SSAFC acting up

 

[hornsfan10609]

I have an SSAFC but the car threw the code for probably a year on and off before I bought the AFC.

What did you do to fix it?

 

[singdasam]

??

 

[jdwk]

On a stock PCM, it's either a vacuum leak (highly likely) or bad MAF (highly unlikely). My wife's car (an 05 impala) threw that code off and on. Her airbox had been knocked loose from intake hose just a crack, and under heavy acceleration is would suck in air past the MAF. Took me a while to find it.

Our cars have a lot of places where hoses can crack or come loose, you just have to systematically go through them.

 

[YlwMSP]

I had a very small boost leak, where the stock hot pipe came into the intercooler, but was supposedly not what was causing the code to pop up. Mine turned out to be a bad cell in the battery and the SSAFC was acting up. I erased it and it would pop up again within a day, then I replaced the battery and it hasnt come back since.