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P0172 Diagnostic Trouble Code Discussion for March 2005

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2001 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSK69M51
P0172: fuel trim bank1 system too rich. The throttle control module seems to check out ok also.any feedback would be great,thank you.
March 02, 2005
2003 Ford Ranger XL 2.3L MIL Lamp on VIN: 1FTYR10D63
P0172: bank 1 rich. went through flow chart & it says to replace computor,very reluctant to replace because would have to outsource & the cost was wondering if you people have had same results.The test seemed to take into account only the o2 sensor & wiring & noth...
March 03, 2005
1997 Chevrolet S10 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCCS1440V
P0172: Fuel System Rich. truck has rough idle. was skipping irratically on cylinders # 1 and # 4. fouled out new plugs, replaced. we can take the wiring harness on the passenger side that goes to the computer and move it and the truck will idle smooth. we have found 2 bad wiring conne...
March 04, 2005
1998 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5279W
P0172: Fuel Trim System Rich (Bank 1). OK, as soon as the oxygen sensor warms up (1 wire) the fuel trim steadily and quickly drops to -50% (or 64 INT)! the engine seems to run good, but the upstream sensor still stays in the 800-900 mv range! the customer bought the car with a bad transmission whic...
March 07, 2005
1999 Pontiac Grand Am SE 2.4L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1G2NE52T7X
P0172: Fuel System Rich. this 2.4 is running very rich,black smoke from tail pipe.fuel trim index goes to 98 after running about 15 seconds.vaccuum at idle is 17".replaced intake gasket,removed front timing chian cover and checked chian,seems to be right on the marks.replaced up s...
March 09, 2005
1998 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5279W
P0172: Fuel Trim System Rich (Bank 1). OK, as soon as the oxygen sensor warms up (1 wire) the fuel trim steadily and quickly drops to -50% (or 64 INT)! the engine seems to run good, but the upstream sensor still stays in the 800-900 mv range! the customer bought the car with a bad transmission whic...
March 09, 2005
1996 Volkswagen Passat GLS 2.0L Poor Idle Quality VIN: WVWGC83A5T
P0172: system to rich. ... engine light flashes on at times and the engine takes forever to idle down, sometimes stays at 2000 rpm forever. Scanned for codes and came up with P0172, system to rich. I dont have the proper flow charts for VW to diagnose this problem myself so i am loo...
March 09, 2005
1994 Volvo 850 Turbo 2.3L MIL Lamp on VIN: YV1LW5717R
P0172: system too rich bank 1. I HAVE read the archives and dont know what to do next. This car will set the the light after @30 miles. I dont believe I have any vacuum leaks. Car is in good shape mechanically. Less than 2000 miles on an electrical tuneup. Any suggestions would be appreciat...
March 17, 2005
1998 Ford Taurus SHO 3.4L Poor Fuel Economy, MIL Lamp on VIN: 1FAFP54WA2
... had codes P0172 and P0175. I test and replaced mass air meter,fuel presser reg. and did a indution cleaning (B.G.). Car run great (LTFT)6% (STFT)2%. Car came back with (P1518 intake leak or varible runer)Smoke tested the...
March 28, 2005
1997 Ford Ranger XLT 4.0L MIL Lamp on VIN: 1FTCR14X5V
P0172: lean condition bamk 1. the fuel trim is -20 and -22 at idle goes towards 0 at cruse fuel injector were cleaned-intake manifold resealed-fule injector flow tested= good- ck. for vacuum leak with smoke tester- NO LEAKS FOUND- sent alot of time making sure- substuited another MAF senso...
March 29, 2005
2002 Ford E-150 Econoline 4.2L Misfire, MIL Lamp on VIN: 1FTRE1462H
P0172: Lean bank 2. any help you guy's could give we would be thankful.
March 29, 2005
2001 GMC Safari SLE 4.3L Excessive Emissions, Surge, Misfire, MIL Lamp on VIN: 1GKDM19WX1
P0172: Fuel Trim System Rich (Bank 1). van came in on hook crank no start.plugs were gas fouled veh .never been tuned replaced plugs with ac delco started cleared out idles perfect when accel.to 2000 prm or more all cyls. start to missfire and runs filthy rich let off go back to idle and runs fine ...
March 30, 2005
2001 Saturn L300 3.0L MIL Lamp on VIN: 1G8JW52R51
P0172: Fuel Trim System Rich (Bank 2). Car setting codes for rich both banks. Fuel trims going to -32 both banks and will drive long term up to -11 at idle and have gotten it to get up to -12 cruise both banks. Car seams to run fine data in freeze frame had set with a total fuel trim correction for...
March 31, 2005
2001 Volkswagen Jetta GLS 2.0L MIL Lamp on VIN: 3VWSK69M51
P0172: fuel trim bank1 system too rich. The throttle control module seems to check out ok also.any feedback would be great,thank you.
March 02, 2005
2003 Ford Ranger XL 2.3L MIL Lamp on VIN: 1FTYR10D63
P0172: bank 1 rich. went through flow chart & it says to replace computor,very reluctant to replace because would have to outsource & the cost was wondering if you people have had same results.The test seemed to take into account only the o2 sensor & wiring & noth...
March 03, 2005
1997 Chevrolet S10 2.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCCS1440V
P0172: Fuel System Rich. truck has rough idle. was skipping irratically on cylinders # 1 and # 4. fouled out new plugs, replaced. we can take the wiring harness on the passenger side that goes to the computer and move it and the truck will idle smooth. we have found 2 bad wiring conne...
March 04, 2005
1998 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5279W
P0172: Fuel Trim System Rich (Bank 1). OK, as soon as the oxygen sensor warms up (1 wire) the fuel trim steadily and quickly drops to -50% (or 64 INT)! the engine seems to run good, but the upstream sensor still stays in the 800-900 mv range! the customer bought the car with a bad transmission whic...
March 07, 2005
1999 Pontiac Grand Am SE 2.4L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 1G2NE52T7X
P0172: Fuel System Rich. this 2.4 is running very rich,black smoke from tail pipe.fuel trim index goes to 98 after running about 15 seconds.vaccuum at idle is 17".replaced intake gasket,removed front timing chian cover and checked chian,seems to be right on the marks.replaced up s...
March 09, 2005
1998 Saturn SL2 1.9L MIL Lamp on VIN: 1G8ZK5279W
P0172: Fuel Trim System Rich (Bank 1). OK, as soon as the oxygen sensor warms up (1 wire) the fuel trim steadily and quickly drops to -50% (or 64 INT)! the engine seems to run good, but the upstream sensor still stays in the 800-900 mv range! the customer bought the car with a bad transmission whic...
March 09, 2005
1996 Volkswagen Passat GLS 2.0L Poor Idle Quality VIN: WVWGC83A5T
P0172: system to rich. ... engine light flashes on at times and the engine takes forever to idle down, sometimes stays at 2000 rpm forever. Scanned for codes and came up with P0172, system to rich. I dont have the proper flow charts for VW to diagnose this problem myself so i am loo...
March 09, 2005
1994 Volvo 850 Turbo 2.3L MIL Lamp on VIN: YV1LW5717R
P0172: system too rich bank 1. I HAVE read the archives and dont know what to do next. This car will set the the light after @30 miles. I dont believe I have any vacuum leaks. Car is in good shape mechanically. Less than 2000 miles on an electrical tuneup. Any suggestions would be appreciat...
March 17, 2005
1998 Ford Taurus SHO 3.4L Poor Fuel Economy, MIL Lamp on VIN: 1FAFP54WA2
... had codes P0172 and P0175. I test and replaced mass air meter,fuel presser reg. and did a indution cleaning (B.G.). Car run great (LTFT)6% (STFT)2%. Car came back with (P1518 intake leak or varible runer)Smoke tested the...
March 28, 2005
1997 Ford Ranger XLT 4.0L MIL Lamp on VIN: 1FTCR14X5V
P0172: lean condition bamk 1. the fuel trim is -20 and -22 at idle goes towards 0 at cruse fuel injector were cleaned-intake manifold resealed-fule injector flow tested= good- ck. for vacuum leak with smoke tester- NO LEAKS FOUND- sent alot of time making sure- substuited another MAF senso...
March 29, 2005
2002 Ford E-150 Econoline 4.2L Misfire, MIL Lamp on VIN: 1FTRE1462H
P0172: Lean bank 2. any help you guy's could give we would be thankful.
March 29, 2005
2001 GMC Safari SLE 4.3L Excessive Emissions, Surge, Misfire, MIL Lamp on VIN: 1GKDM19WX1
P0172: Fuel Trim System Rich (Bank 1). van came in on hook crank no start.plugs were gas fouled veh .never been tuned replaced plugs with ac delco started cleared out idles perfect when accel.to 2000 prm or more all cyls. start to missfire and runs filthy rich let off go back to idle and runs fine ...
March 30, 2005
2001 Saturn L300 3.0L MIL Lamp on VIN: 1G8JW52R51
P0172: Fuel Trim System Rich (Bank 2). Car setting codes for rich both banks. Fuel trims going to -32 both banks and will drive long term up to -11 at idle and have gotten it to get up to -12 cruise both banks. Car seams to run fine data in freeze frame had set with a total fuel trim correction for...
March 31, 2005