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P0172 Diagnostic Trouble Code Discussion for January 2005

Fuel System Rich (Bank 1)

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Trouble Ticket Help Requests for DTC P0172
Help Request Posted
2000 Ford F-150 XL 4.2L Poor Idle Quality, Poor Fuel Economy, MIL Lamp on, rich exh. VIN: 1FTZF1824Y
P0172: system too rich bank1. Hi gang,this sucka is running "RICH"!Customers complaint was;ck. eng. light has come-on+running rough,Pulled codes=po172+po175=both banks "system too rich. So i did the usual ck. of live data/ freeze-frame etc, power balance/compr. tests=o.k. , did...
January 20, 2005
2001 Volkswagen Beetle GLS 2.0L MIL Lamp on VIN: 3VWCT21C61
P0172: O2 sensor shows rich. ... light on code #P0172B O2 sensor rich. We checked the system but found no problems. We did clean the carbon and the throtall body. Replaced the air filter and added BG44 to clean the fuel injectors and resete the light. The work was done cause the car was o...
January 20, 2005
2002 Ford Taurus LX 3.0L Poor Idle Quality, Surge, Stall, MIL Lamp on VIN: 1FAFP55242
P0172: bank 1 rich. Customer Brought in a 2002 Ford Taurus Flex Fuel 3.0 with complaint of MIL on and intermitent hard start. Found Codes 0172 and 0175 Stored in ECM Both Bank 1&2 LTFT numbers were fluctating between -18% and -24% @ idle with STFT -2% to -6%. MAF voltage was ...
January 25, 2005
2000 Toyota Celica GT 1.8L Hesitation, MIL Lamp on VIN: JTDDR32TXY
P0172: Fuel System Too Rich (Bank 1). ... dtc p0172. vehicle is not very responsive on initial take off- hesitates badly. we found the mass air flow sensor very dirty. removed and cleaned mass air flow sensor. disconnected battery for 5+ minutes to reset keep alive memory. drove vehicle and retest...
January 26, 2005
2001 Mercury Sable LS Premium 3.0L Excessive Emissions, MIL Lamp on VIN: 1MEFM55S51
P0172: bank 1 rich. Customer brought to dealer for illuminated mil and brake light switch recall in June 04. No record of codes from dealer invoices. Replaced downstream o2, light came back on, replaced fuel pump and pcm, light came back on, replaced converters and intake gaskets...
January 27, 2005
2000 Toyota Tundra 3.4L Hesitation, Poor Fuel Economy, MIL Lamp on VIN: 5TBJN3213Y
P0172: Fuel System Too Rich (Bank 1). Hello all, This one is back. Last week I replaced plugs and filters and cleaned maf sensor,checked for air leaks, etc.. It had both rich and lean codes so I was thinking maf sensor. I turned off the lite and gave it back to the customer with a warning that we ...
January 27, 2005
1997 Mazda B4000 4.0L Excessive Emissions, Poor Fuel Economy, MIL Lamp on VIN: 4F4CR16XOV
P0172: Adaptive Fuel Trim Too Rich (Bank 1). here is a truck we dont want to jump at replacing parts, need guidance in testing for possible causes. both o2 sensors are flatlined lean, seems fishy because we read of a history of intake manifold gaskets. its 4 hours to try the gaskets and over $200 to mist...
January 31, 2005