How to Avoid Toyota Rough Idle | Fix P0171, P0101 Codes

[@amilcareschettini5881]

I keep getting a P0101 and replaced the MAF with OEM. Throttle body is clean, and the engine filter is relatively new. My mpg has dropped in my 2018 significantly too....

[@eazidiy]

Please check the harness connector and wire for corrosion too.

[@ac1studios]

So I have a Toyota Corolla 2013 LE and I have a P0101 Code and my car had a K&N filter. I cleaned the mass air flow sensor and code went away for some time and cleaned the engine filter. Now I just mainly get a System too lean bank 1 P0171 code. Had the same cracked hose as you had for the P0171 but still get the code after replacing that hose. How can i fix it?

[@ac1studios]

RPM does fluctuate a bit sometimes.

[@eazidiy]

You may have other issues like fuel pressure or purge valve leaks. I would recommend seeking professional assistance.

[@averybruggeman607]

'PromoSM'

[@eazidiy]

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