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P0172 Diagnostic Trouble Code Discussion for November 2009

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2004 Ford Expedition XLT 4.6L MIL Lamp on VIN: 1FMRU17W04
P0172: System rich bank 1. ... with CEL on and no other complaint. Checked air filter-ok, cleaned MAF. Haven't found much to go on. Would really appreciate some help. Even though both sides seem a little rich, it only throws a right side code (P0172). Clear code and it comes right back ...
November 01, 2009
1996 Chevrolet S10 2.2L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1GTCS1947T
P0172: Fuel System Rich. ... labors badly when accelerating. Only code that set is P0172 fuel system rich bank 1. Oxygen sensors have both been replaced (no change). Doesn't have Maf. Removed the exhaust from in front of the catalytic converter. Still had no power. Any help would be g...
November 02, 2009
1997 Toyota RAV4 2.0L Poor Fuel Economy, MIL Lamp on VIN: JT3HP10V6V
P0172: Fuel System Too Rich (Bank 1). I have a Rav4 with a P0172 system rich code. I replaced the 02 sensor to see if any change. none. Started looking at fuel evap to see if any thing there would cause the STFT to be at -20 and the LTFT to be at -30. I started to check the MAF and found th e ref ...
November 03, 2009
1999 Ford Explorer XLT 4.0L Misfire, MIL Lamp on VIN: 1FMZU34E8X
P0172: rich exhaust bank 1. Misses bad on cylinders 1-2-3, so far I have switched up and down stream O/2 Sensors and that didnt change a thing. I checked for vaccum leaks around intake and doesnt seem to be any, Some things I have noticed is a wierd almost "chirping" sound in the...
November 04, 2009
2004 Ford Ranger XL 2.3L MIL Lamp on VIN: 1FTYR10D14
P0172: System To Rich Bank One. Ranger returned with a p172 and a p2196 both codes indicate a rich condition the fuel trims are confirming this as the the short term stays aroind -8 and long term stays at -25 until the truck warms up them stft goes to around 0 and the ltft stays at -25 all t...
November 10, 2009
2000 Ford Explorer XLT 4.0L MIL Lamp on VIN: 1FMZU72X7Y
P0172: bank 1 rich. greetings to all this truck is setting rich codes for both banks,i [...] sensors and both read 800 mv fuel trim is -25 on both bamks i have looked at my coolant sensor and mass air flow and all looks well.i checked fuel pressure and i have 65 psi at idle,all d...
November 11, 2009
1996 Chevrolet S10 2.2L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1GTCS1947T
P0172: Fuel System Rich. ... labors badly when accelerating. Only code that set is P0172 fuel system rich bank 1. Oxygen sensors have both been replaced (no change). Doesn't have Maf. Removed the exhaust from in front of the catalytic converter. Still had no power. Any help would be g...
November 12, 2009
2000 Honda CR-V EX 2.0L MIL Lamp on VIN: JHLRD1879Y
P0172: Fuel System Too Rich (Bank 1). Dear fellow techs, This crv came in with check engine light on small hesitation at take off from a stop - replaced front o2 sensor, adjusted valves, checked fuel pressure - ok - checked purge valve -ok - vac 19 in at idle cleared computer and I drove it once ...
November 12, 2009
2001 Ford Explorer Postal 4.0L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1FCMU69K51
P0172: bank 1 too rich. This truck came n for a transmission problem jumping into nuetral.R+R trans, truck still acting up. No cel active, bc of bulb failure. replaced bulb, cel p0705, found bad connection at PRND switch, code does not return. Truck running poor, stalls if idled too ...
November 13, 2009
2001 Ford Explorer Postal 4.0L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1FCMU69K51
P0172: bank 1 too rich. This truck came n for a transmission problem jumping into nuetral.R+R trans, truck still acting up. No cel active, bc of bulb failure. replaced bulb, cel p0705, found bad connection at PRND switch, code does not return. Truck running poor, stalls if idled too ...
November 25, 2009