getting fuel trim bank 1 trouble code

2000 MITSUBISHI ECLIPSE
181,796 MILES
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ECLIPSE2000GS
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  • 1 POST
My car keeps giving me a code that says fuel trim bank 1 and i dont know what to do I changed my spark plugs because I heard that could have been a problem please help it dont fill like it misfireing and its at 1000 rpms what should i do
Oct 7, 2011 at 3:09 AM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
trim codes indicate the engine either running rich or lean, depending on the code. many possibilities including vacuum leaks, mass air flow sensor, fuel pressure issue and pcv valve.
anyway, i would not guess at this as guessing is expensive and usually wrong. it would be cheaper to have it diaged correctly and then decide to fix it yourself or have a shop do it.

Roy
Oct 7, 2011 at 3:14 AM
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