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P0172 Diagnostic Trouble Code Discussion for December 2007

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2003 Ford Ranger Edge 3.0L MIL Lamp on VIN: 1FTYR44VX3
P0172: system rich bank 1. Truck came in 9 mo ago for ses light on, found codes po172 and po175, lt fuel was -25 both banks. Cleaned maf , power cleaned injectors, replaced plugs. Came back today with same codes, po172 and po175, so I cleaned injectors again and replaced fuel pressure r...
December 06, 2007
2001 Chevrolet Astro LS 4.3L Poor Idle Quality VIN: 1GNEL19W21
P0172: Fuel Trim System Rich (Bank 1). This vehicle was towed into our shop as a no start. When we tried to start it , it seemed to be flooded. It finally started after cranking it with the throttle wide open. After it started, it seemed to idle a little rough. It had codes 172 and 174 in history. ...
December 12, 2007
2001 Chevrolet Astro LS 4.3L Poor Idle Quality VIN: 1GNEL19W21
P0172: Fuel Trim System Rich (Bank 1). This vehicle was towed into our shop as a no start. When we tried to start it , it seemed to be flooded. It finally started after cranking it with the throttle wide open. After it started, it seemed to idle a little rough. It had codes 172 and 174 in history. ...
December 13, 2007
2003 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMPU16L63
P0172: rich bank one. My main concern with this truck is the fuel pressure it will not change with lack of vaccum or snapping the throttle. the O2 sensors seem to be working well and the truck does not misfire under load. I have replaced the fuel pressure regulator and the pressure...
December 18, 2007
2003 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMPU16L63
P0172: rich bank one. My main concern with this truck is the fuel pressure it will not change with lack of vaccum or snapping the throttle. the O2 sensors seem to be working well and the truck does not misfire under load. I have replaced the fuel pressure regulator and the pressure...
December 19, 2007
1999 Ford Ranger XL 3.0L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1FTYR11V6X
P0172: Rich condition. This Ranger is running very rich at idle and cruise Huffing black smoke rich.Fuel pressure is stuck @55 psi.I have replaced the flex fuel sensor with a salvage yard unit but i think it is bad too.Information is bad at best on how the flex fuel system works.I r...
December 27, 2007
1996 Toyota Tercel DX 1.5L MIL Lamp on, rich VIN: JT2AC52L2T
P0172: Fuel System Too Rich (Bank 1). ... another shop did some EGR repairs. Scaned found EGR codes and Lack of O2 switching. Found the EGR solenoid was not plugged in. Found bank one sensor one O2 was switching very fast with lab scope test. replaced o2 with toyota o2. test and it was switching f...
December 31, 2007
2003 Ford Ranger Edge 3.0L MIL Lamp on VIN: 1FTYR44VX3
P0172: system rich bank 1. Truck came in 9 mo ago for ses light on, found codes po172 and po175, lt fuel was -25 both banks. Cleaned maf , power cleaned injectors, replaced plugs. Came back today with same codes, po172 and po175, so I cleaned injectors again and replaced fuel pressure r...
December 06, 2007
2001 Chevrolet Astro LS 4.3L Poor Idle Quality VIN: 1GNEL19W21
P0172: Fuel Trim System Rich (Bank 1). This vehicle was towed into our shop as a no start. When we tried to start it , it seemed to be flooded. It finally started after cranking it with the throttle wide open. After it started, it seemed to idle a little rough. It had codes 172 and 174 in history. ...
December 12, 2007
2001 Chevrolet Astro LS 4.3L Poor Idle Quality VIN: 1GNEL19W21
P0172: Fuel Trim System Rich (Bank 1). This vehicle was towed into our shop as a no start. When we tried to start it , it seemed to be flooded. It finally started after cranking it with the throttle wide open. After it started, it seemed to idle a little rough. It had codes 172 and 174 in history. ...
December 13, 2007
2003 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMPU16L63
P0172: rich bank one. My main concern with this truck is the fuel pressure it will not change with lack of vaccum or snapping the throttle. the O2 sensors seem to be working well and the truck does not misfire under load. I have replaced the fuel pressure regulator and the pressure...
December 18, 2007
2003 Ford Expedition XLT 5.4L MIL Lamp on VIN: 1FMPU16L63
P0172: rich bank one. My main concern with this truck is the fuel pressure it will not change with lack of vaccum or snapping the throttle. the O2 sensors seem to be working well and the truck does not misfire under load. I have replaced the fuel pressure regulator and the pressure...
December 19, 2007
1999 Ford Ranger XL 3.0L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1FTYR11V6X
P0172: Rich condition. This Ranger is running very rich at idle and cruise Huffing black smoke rich.Fuel pressure is stuck @55 psi.I have replaced the flex fuel sensor with a salvage yard unit but i think it is bad too.Information is bad at best on how the flex fuel system works.I r...
December 27, 2007
1996 Toyota Tercel DX 1.5L MIL Lamp on, rich VIN: JT2AC52L2T
P0172: Fuel System Too Rich (Bank 1). ... another shop did some EGR repairs. Scaned found EGR codes and Lack of O2 switching. Found the EGR solenoid was not plugged in. Found bank one sensor one O2 was switching very fast with lab scope test. replaced o2 with toyota o2. test and it was switching f...
December 31, 2007