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P0172 Diagnostic Trouble Code Discussion for May 2008

Fuel System Rich (Bank 1)


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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2001 Dodge Grand Caravan ES 3.3L MIL Lamp on VIN: 2B4GP34312
P0172: Fuel System Rich (Bank 1). ... a no start complaint. it would actually crank and run if you cranked on it long enough. it would start after fuel pressure would build to about 25 psi. spec is 53-63 psi. i put a pump in it and it would start no problem. sent it on its way and it came back...
May 01, 2008
2000 Ford Windstar LX 3.8L Poor Fuel Economy, MIL Lamp on VIN: 2FMZA5140Y
P0172: Bank 1 Rich. ... problem. After looking at it I found that the cats were plugged up. The check engine light was on with codes P0172 and P0175 - Both banks rich. I replaced the cats with an aftermarket y-pipe assembly because they were no longer...
May 06, 2008
1996 Chevrolet C1500 Cheyenne 5.0L Excessive Emissions, Hesitation VIN: 2GCEC19M7T
P0172: Fuel Trim System Rich (Bank 1). This truck came in with symptoms of intermittent run rough, idles low and almost stalls. Sometimes doesn't happen a few days in-between. Customer says problem only lasts a few seconds. Of course I can't get any of the symptoms to occur. The tps sweeps good a...
May 07, 2008
2000 Ford Explorer Sport 4.0L MIL Lamp on VIN: 1FMYU60X4Y
P0172: bank 1 rich. fellow members, hope you can give me some direction. this truck keeps setting rich codes. unusual on fords as it is normally lean codes. tried a new fuel pressure regulator, but did not change. no similar posts in archives. no tsbs either. tested for vacuum le...
May 09, 2008
2001 Chrysler Sebring LX 2.7L MIL Lamp on VIN: 1C3AL56VO1
P0172: Fuel System Rich (Bank 1). ... car came in a while back with a P0442 and a P0172. The Evap was fixed. the original tech found a MAP with 1.8v at idle. He swapped in a new one and voltage dropped to 1.3v at idle. Now it's back with a P0108 MAP Circuit High Voltage. KOEO it is 4.6v. KOER...
May 12, 2008
1999 Lexus RX300 3.0L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: JT6HF10V3X
P0172: System too rich bank 1. Got one of the fancy Toyotas here that doesn't run so good. Came in with running rich, mil on, idling poorly, and occasional stalling. Had the Snap-On guy putting on a school to try and sell more Modis scan tools. A guy named Kevin popped up from Florida long ...
May 12, 2008
2001 Chrysler Sebring LX 2.7L MIL Lamp on VIN: 1C3AL56VO1
P0172: Fuel System Rich (Bank 1). ... car came in a while back with a P0442 and a P0172. The Evap was fixed. the original tech found a MAP with 1.8v at idle. He swapped in a new one and voltage dropped to 1.3v at idle. Now it's back with a P0108 MAP Circuit High Voltage. KOEO it is 4.6v. KOER...
May 13, 2008
1999 Lexus RX300 3.0L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on VIN: JT6HF10V3X
P0172: System too rich bank 1. Got one of the fancy Toyotas here that doesn't run so good. Came in with running rich, mil on, idling poorly, and occasional stalling. Had the Snap-On guy putting on a school to try and sell more Modis scan tools. A guy named Kevin popped up from Florida long ...
May 13, 2008
2001 Chevrolet Express 3500 5.7L No Start, MIL Lamp on VIN: 1GAHG39R11
P0172: Fuel Trim System Rich (Bank 1). this came in as no start - bad ignition coil- installed coil/spark plugs/ignition wires as there was multi misfire in computer. Vehicle will start but very very hard but runs fine once started.The only reliable way to start it is shoot a little 2+2 in intake t...
May 21, 2008
2001 Nissan Sentra GXE 1.8L Hesitation, MIL Lamp on VIN: 3N1CB51A71
P0172: Fuel Trim Rich (Bank 1). Hi all, Iíve been working on this Sentra off and on for a few days now. Problem is it wonít accelerate as if a catalyst were clogged. Runs up in neutral ok to about 4000 when it misses slightly, but wonít produce much power in gear. Data stream looks ok except...
May 29, 2008