Question about 2001 Jaguar S-Type
P0171 system too lean bank 1
P0174 system too lean bank 2
links to information on the codes
it means that the O2 sensors in your vehicle detected a lean condition in their respective banks. this could be caused by a dirty MAF (mass air flow) sensor or a vacuum leak downstream from the MAF sensor
sometimes you can clean the MAF with electronics cleaner or brake cleaner but be sure to take it off the vehicle first. be careful not to damage the MAF while spraying the cleaner, and allow it to dry completely before installing it on the vehicle.
Posted on May 21, 2011
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Posted on Jan 02, 2017
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