× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0173 Diagnostic Trouble Code Discussion for March 2009

Fuel Trim Lean Or Rich (Bank 2)

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0173
Help Request Posted
2001 Mercedes-Benz ML320 3.2L MIL Lamp on VIN: 4JGAB54E81
P0173: fuel trim bank 2. test o2 sensors they test o.k. (used propane) and did fuel press test within spec, this vehicle drives and runs good but flags codes history fuel trim reaches 26% but can't get it to happen for me. thinking possible weak o2 sensors or or fuel filter/regulator ...
March 09, 2009
2000 Mitsubishi Montero Sport Limited 3.5L MIL Lamp on VIN: LA4MT41R6Y
P0173: Fuel Trim Lean Or Rich (Bank 2). hey mitsubishi techs.i have one night mare here.2000 montero sport 3.5 liter.check engine light is on.po173.checked for vacuum leaks with smoke machine no visible leaks.car is running excellent.fuel pressure is in specs.i replace the maf sensor and put oe part...
March 20, 2009