Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: Engine light was on with codes P0171 and P0174 and now the light is off on 2001 Toyota Avalon

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Toyota technician diagnosed with the codes p0171 and p0174 and recommended to replace bank 2 A/F sensor to begin with as the most probable cause because the voltage was not correct, and replace the PCV valve and gromet. However, the check engine light is no longer on a few days later. Any insights to this problem would be greatly appreciated.

Thanks in advance,

Dan
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
Find Out Why Your Check Engine Light Is On
Didn't find what you were looking for?