What does this mean p0174 system too lean on a jaguar s type 2002 Bank 2 and 1?

Your O2 sensors have detected too much oxygen in the exhaust, clean the MAF sensor, a dirty one is the most probable cause. If you are using an aftermarket ( oiled ) air filter too much oil will foul the sensor.

First answer by Ganderton. Last edit by Ganderton. Contributor trust: 1867 [recommend contributor]. Question popularity: 1 [recommend question]