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P0172 Diagnostic Trouble Code Discussion for July 2005

Fuel System Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2001 Lexus RX300 3.0L Excessive Emissions, MIL Lamp on VIN: JTJHF10U31
P0172: Bank 1 rich. ... Started out as just one code p0172 Bank1 running rich. Tested o2 sensor. Sensor tested good.Per customer request I installed a New air/fuel ratio sensor. Code came back. Pulled plenum to test all 6 injectors.The all tested good. I moved the back injectors ...
July 08, 2005
2002 Chevrolet Express 1500 4.3L Excessive Emissions, Poor Fuel Economy VIN: 1GCFG15W12
P0172: Fuel Trim System Rich (Bank 1). Morning Techs This van came to us with these two codes, did the usual- check for other codes, parameters checked out, air filter. Nothing jumped out at me. After a little research I found bullentin on the CPI getting varnish build up and causing poppets to dr...
July 09, 2005
2003 Ford Taurus LX 3.0L MIL Lamp on VIN: 1FAFP52U83
P0172: system too rich bank 1. this car came in with p0172 system too rich bank 1,cleaned mass air ,replaced fuel filter,and replacer airfilter.about 550 miles later the same code p0172 came back.this has a fuel psi sensor on the fuel rail. the scanner reads 41.76 h ot at idle,fuel gauge is...
July 13, 2005
2000 Ford Taurus SE 4-Valve 3.0L MIL Lamp on VIN: 1FAFP55S0Y
P0172: Bank 1 Rich. We are getting a rich mixture code on this Taurus. the long term fuel trim on bank 1 is -20 while the right bank is 0. We have checked for vacuum leaks although I would think that would set a lean code. Is it possible that an injector on that bank is deliverin...
July 14, 2005
2001 Dodge Dakota Sport 4.7L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1B7GG2AN71
P0172: Fuel System Rich (Bank 1). this dakota has a rough idle and smooths out above idle like a vacuume leak but no external leaks are found. also has a code for rich condition on bank 1 po172 found bank1 long term trim to be way off at -25% st 1.4% bank2 lt 3.1 st 1.4 funny thing is i checke...
July 19, 2005
2001 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNDT13W01
P0172: Fuel System Rich (Bank 1). ... rich; vehicle sets codes P0172 & P0175 (rich banks 1&2). When codes and fuel-trim are reset, it only takes 15-30 seconds before fuel trim is -13%. O2 sensors are sweeping OK even as fuel trim is dropping. Air intake system has no restrictions or bl...
July 22, 2005
1998 Pontiac Sunfire SE 2.4L Excessive Emissions, Cuts out, Stall, MIL Lamp on VIN: 4G2JB32T1W
P0172: Fuel System Rich (Bank 1). Car came from other shop- codes PO172 and PO1133 set- new O2 front installed Checked frezze frame- LT -21%/ ST -25%/ Map 45 kPa/ Cal. Air flow 16.59 g/s/ 60 mph/ ECT 183F/ Fuel injector pulze 1.6 m/s fuel pressure runing 40 psi./ engine off holds at 28 psi. co...
July 31, 2005