Join Now
International Automotive Technicians Network

P0172 Diagnostic Trouble Code Discussion for November 2013

Fuel System Rich (Bank 1)


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 P0172
Help Request Posted
2004 Mercedes-Benz C230 Kompressor 1.8L MIL Lamp on VIN: WDBRN40J64
Car initially came in with several codes lean and rich, also codes for oxygen sensors, first we smoke checked car and found a hose blown off by the supercharger, thought we had it diagnosed, replaced hose, rechecked for vacuum leaks, found none, test drove car...
November 08, 2013
1999 GMC C3500 Sierra SL 7.4L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GDKC34J3X
P0172: Fuel Trim System Rich (Bank 1). Please help with this nightmare. Vehicle back again after we thought we had the problem fixed. Truck runs great when it is cold but after a few days will run consistently poor only when hot. Unrelated to the issue in the last year we have replaced ignition par...
November 12, 2013
2004 Mercedes-Benz C230 Kompressor 1.8L MIL Lamp on VIN: WDBRN40J64
Car initially came in with several codes lean and rich, also codes for oxygen sensors, first we smoke checked car and found a hose blown off by the supercharger, thought we had it diagnosed, replaced hose, rechecked for vacuum leaks, found none, test drove car...
November 15, 2013
2004 Mercedes-Benz C230 Kompressor 1.8L MIL Lamp on VIN: WDBRN40J64
Car initially came in with several codes lean and rich, also codes for oxygen sensors, first we smoke checked car and found a hose blown off by the supercharger, thought we had it diagnosed, replaced hose, rechecked for vacuum leaks, found none, test drove car...
November 08, 2013
1999 GMC C3500 Sierra SL 7.4L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GDKC34J3X
P0172: Fuel Trim System Rich (Bank 1). Please help with this nightmare. Vehicle back again after we thought we had the problem fixed. Truck runs great when it is cold but after a few days will run consistently poor only when hot. Unrelated to the issue in the last year we have replaced ignition par...
November 12, 2013
2004 Mercedes-Benz C230 Kompressor 1.8L MIL Lamp on VIN: WDBRN40J64
Car initially came in with several codes lean and rich, also codes for oxygen sensors, first we smoke checked car and found a hose blown off by the supercharger, thought we had it diagnosed, replaced hose, rechecked for vacuum leaks, found none, test drove car...
November 15, 2013