Trying to find code P1171 for 2001 Volvo v70 t5 awd

Question

I am trying to find out what the code p1171 means

Answer 1

P1171 Long fuel trim upper limit

This is for the upper limit mean you need to check for a vacuum leak , such as the brake booster, the canister purge,or low fuel pressure . a MAF (mass airflow) that is falsely reading can also set this code, This code condition is more of a vacuum leak.