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P0172 Diagnostic Trouble Code Discussion for January 2013

Fuel System Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2007 GMC Yukon SLT 5.3L MIL Lamp on VIN: 1GKFK13047
P0172: Fuel System Rich (Bank 1). Starts good, good fuel pressure, maf readings are good, when engine is at idle or decel the fuel trims climb up instantly. Has mil on for 12000 km. Has good power and no missfires. Checked all data in global data stream as well, we can not figure why the fuel ...
January 11, 2013
1998 Honda Civic LX 1.6L Excessive Emissions, Poor Fuel Economy VIN: 2HGEJ6573W
P0172: Fuel System Too Rich. Car runs rich at all speeds, fuel trim LT .84 or 17% to .90 or 21%, Tested all inputs, ect 189f, iat 75f, o2.99v, map 1.0v, fuel pressure 35psi, (all tested at idle.) disconnected evap, plugged off PCV system, Has no EGR. checked valve adj. and timing belt....
January 17, 2013
2002 Ford Explorer XLT 4.0L Poor Idle Quality, Stall, MIL Lamp on VIN: 1FMZU63K52
this is a car of a friend of mine , and the only code I get is PO172 ,PO175 , lately is been worse, stall and I check the fuel trims and both short and long fuel trims on both bank are negative , long are about -25 and short around -10 or less, so I put a smok...
January 19, 2013
2000 Ford F-150 Lightning 5.4L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: 2FTZF0732Y
P0172: bank 1 rich fuel mixture. Any Ford techs with enough seat time on these VIN 3 5.4's to help with this pesky truck? KOEO & KOER service bay tests revealed inability to control idle speed. test revealed defective IABV. replaced IABV and idle speed increased to 13 -1400 rpm. disconne...
January 23, 2013
2002 Ford Ranger Edge 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTYR10U12
P0172: bank one too rich. Customer brought the vehicle in complaining of a misfire in reverse and CEL was on.This truck had a tuneup about 6 months ago at another shop and plugs and wires are motorcraft. test drove and the misfire is there all the time.Pulled codes and found P301 and P...
January 24, 2013
2004 Volvo S60 2.4 2.4L MIL Lamp on VIN: YV1RS61T84
P0172: rich exhaust bank 1. i have a 04 volvo s60 continuous code p0172 coming back,when accelerating front O2 goes into open loop and fuel trim goes rich ltft reading is 23.5 stft reading is 14.5 only when in open loop. car has new mass air flow no air leaks or vacuum leak that we can f...
January 25, 2013