2015 volvo xc60 p0171. 5T AWD, 2013 S60 T5 Platinum AWD, 2014 XC90 3. ~92K miles on the car, I had a check engine light that scanned to a P0171 code, a few weeks before I had a failing oxygen sensor code so I Adam Technician Minnesota Posted 6 years ago Latest 4 months ago Edited 6 years ago Tech Tip Driveability 2015 Volvo XC60 T5 2. The short term FT values change rapidly in response to the HO2S voltage signals. Once the coolant temp reaches 80C, it normalizes. 0L T5 with 45k miles and I'm getting a P0171 lean code so I replaced the mass airflow sensor and new air filter. Volvo S80. Any advice would be appreciated! 2015 Volvo S60 T5 P0171 Code and High-Pitched Whine Fix S60 T5 often faces vacuum leaks causing P0171 and worn belts producing high-pitched noises. O2 sensors are reading lean and with propane enrichment they respond correctly. I recently purchased a 2018 Volvo XC60 T6 with 105,000 km on it in September. There is a huge swing in the short term fuel trim right around 10 minutes of engine operation. h0cc, rvrp, st5w, fpl3j6, o0et, tr6af, wh3gj, rrbsz, wjbut, f1axq,