Join Now
International Automotive Technicians Network

P0172 Diagnostic Trouble Code Discussion for January 2010

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
2000 Jeep Wrangler SE 2.5L Excessive Emissions, Poor Idle Quality, Cuts out, Stall VIN: 1J4FA2SP4Y
P0172: Fuel System Rich (Bank 1). This truck came in cutting out and smelling rich at idle. What ive experienced is at idle o2 sensor shows full rich and it will not sweep unless you pull large vacuum hose then I will see low o2 voltage for a second or two. When I come off of idle it will kind...
January 05, 2010
2004 Ford F-150 FX4 5.4L Poor Idle Quality VIN: 1FTPW14564
P0172: rich bank 1. cleared codes, cleaned induction system, added 1/2 qt trans fluid to engine and roadtest, only lean/rich codes came back, idles crappy. reset kam and recheck fuel trims, adding fuel and removing fuel on other bank..
January 07, 2010
2002 Chrysler Town & Country (Van) LX 3.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 2C4GP44382
P0172: Rich condition. ... came in running bad and check engine light on. We started out by replacing the coil pack,plugs,wires,clean fuel injectors. The van ran the same (when it came in it had codes P0172,P0300). We recheked codes and the one trip codes were 300,302,303,172. We re...
January 08, 2010
1999 Jeep Grand Cherokee Laredo 4.0L Excessive Emissions, Poor Idle Quality, Cuts out, Poor Fuel Economy VIN: 1J4GW58S5X
P0172: Fuel System Rich (Bank 1). truck runs wayy to rich will not start unless you give it gas pedal... any help would be appreciated
January 20, 2010
2001 Chrysler Sebring LXi 2.7L MIL Lamp on VIN: 1C3EL56U91
P0172: Fuel System Rich (Bank 1). car pass the emission test. Failed cause trouble codes. Run perfect at idle and cruising (idle 750 rpm) no vacuum leaks found, no exhaust leaks found,the freeze frame is at idle, oxygen sensors upstream cycling good, downstream O2 sensors steady between 900 t ...
January 25, 2010
1997 Lexus LS400 4.0L Excessive Emissions, Misfire, MIL Lamp on VIN: JT8BH28F7V
P0172: Fuel System Too Rich (Bank 1). Hello,I'm stuck w/this lexus,Originally came-in w/codes for entire bank#2 misfires...But running fine w/dropped off+ thru diag,still o.k.,Decided to sell Secondary ign.tune-up Came back next day w/ lite back+ same codes,found cat.on r/s glowing red+ code for f...
January 26, 2010
2001 Chrysler Sebring LXi 2.7L MIL Lamp on VIN: 1C3EL56U91
P0172: Fuel System Rich (Bank 1). car pass the emission test. Failed cause trouble codes. Run perfect at idle and cruising (idle 750 rpm) no vacuum leaks found, no exhaust leaks found,the freeze frame is at idle, oxygen sensors upstream cycling good, downstream O2 sensors steady between 900 t ...
January 30, 2010
2000 Jeep Wrangler SE 2.5L Excessive Emissions, Poor Idle Quality, Cuts out, Stall VIN: 1J4FA2SP4Y
P0172: Fuel System Rich (Bank 1). This truck came in cutting out and smelling rich at idle. What ive experienced is at idle o2 sensor shows full rich and it will not sweep unless you pull large vacuum hose then I will see low o2 voltage for a second or two. When I come off of idle it will kind...
January 05, 2010
2004 Ford F-150 FX4 5.4L Poor Idle Quality VIN: 1FTPW14564
P0172: rich bank 1. cleared codes, cleaned induction system, added 1/2 qt trans fluid to engine and roadtest, only lean/rich codes came back, idles crappy. reset kam and recheck fuel trims, adding fuel and removing fuel on other bank..
January 07, 2010
2002 Chrysler Town & Country (Van) LX 3.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: 2C4GP44382
P0172: Rich condition. ... came in running bad and check engine light on. We started out by replacing the coil pack,plugs,wires,clean fuel injectors. The van ran the same (when it came in it had codes P0172,P0300). We recheked codes and the one trip codes were 300,302,303,172. We re...
January 08, 2010
1999 Jeep Grand Cherokee Laredo 4.0L Excessive Emissions, Poor Idle Quality, Cuts out, Poor Fuel Economy VIN: 1J4GW58S5X
P0172: Fuel System Rich (Bank 1). truck runs wayy to rich will not start unless you give it gas pedal... any help would be appreciated
January 20, 2010
2001 Chrysler Sebring LXi 2.7L MIL Lamp on VIN: 1C3EL56U91
P0172: Fuel System Rich (Bank 1). car pass the emission test. Failed cause trouble codes. Run perfect at idle and cruising (idle 750 rpm) no vacuum leaks found, no exhaust leaks found,the freeze frame is at idle, oxygen sensors upstream cycling good, downstream O2 sensors steady between 900 t ...
January 25, 2010
1997 Lexus LS400 4.0L Excessive Emissions, Misfire, MIL Lamp on VIN: JT8BH28F7V
P0172: Fuel System Too Rich (Bank 1). Hello,I'm stuck w/this lexus,Originally came-in w/codes for entire bank#2 misfires...But running fine w/dropped off+ thru diag,still o.k.,Decided to sell Secondary ign.tune-up Came back next day w/ lite back+ same codes,found cat.on r/s glowing red+ code for f...
January 26, 2010
2001 Chrysler Sebring LXi 2.7L MIL Lamp on VIN: 1C3EL56U91
P0172: Fuel System Rich (Bank 1). car pass the emission test. Failed cause trouble codes. Run perfect at idle and cruising (idle 750 rpm) no vacuum leaks found, no exhaust leaks found,the freeze frame is at idle, oxygen sensors upstream cycling good, downstream O2 sensors steady between 900 t ...
January 30, 2010