Check engine is light is on (orange). Caused by error code P0171 (system running too lean bank1).
I checked some values using my OBD app.
Probably caused by my STFT and LTFT values being out of range. (both have spikes until over 20%).
What I also notices is that LTFT is also constantly changing values, which should have less changes compared to STFT.
WHen driving steady (highway for example) the values are stable and low within the normal range having values staying below 10%.
Especially when running idle both values are very high and stay high until driving away. Both dive to normal values reight away then.

BTW car drives fine. So from that perspective I don't experience any issue.
Also: When filling up the tank fully starting the engine takes much longer than usual, but after that I can do several trips/days without issues/error codes at all!

So any idea where I should be looking for the issue?

 

Forum Newbie. I’ve got the same issue, including struggling refill restart. Car runs sweet despite fault code for nearly 12 months now.

Several service centers have given me different options in that time - including Bosch service centre.

Disconnect the in line sensor / component pictured and the fault will clear and not return until the engine is switched off


Disconnecting as pictured and the fault will stay cleared whilst car is running.

Does that suggest its that component at fault?

Anyway, Feels like it’s just going to have to go back to Volvo Service 💰 😫

welcome any thoughts