Q: Code P0172 came up in my 2010 Chevy Malibu. The dealer charged me $100 to troubleshoot the code. I was told that all the sensors were good and to run the gas tank low and fill up with high-octane ...
Well given the fault code, we would suggest that you check the air intake system, ie filters etc. Then, if that's OK check the EVAP cannister purge valve, then the EGR system.
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