RepairPal is your advocate for car care advice and guidance

Q: trouble codes on 2001 Ford Explorer

id like to know if a faulty gas cap would cause trouble codes po 171 and 174.when i bought this vehicle the check engine light came on shortly after.
i took it to the place of purchace and told them the first code which said loose cap or canister cover.they said it was probably a bad gas cap .know it shows these two new codes which says its burning lean in bank 1 and bank 2 thanks for any info
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
The link here does not work. I have this persistent 171 and 174 code. Have done the fuel pump, fuel pressure reg, new 02's, cats, new maf, fuel filter. Still throwing!
Didn't find what you were looking for?