P0172 Diagnostic Trouble Code Discussion for February 2019
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2004 Mercedes-Benz C240 2.6L No Start, long crank to start VIN: WDBRF61J34 P0172: Rich - bank 1. The engine is very hard to start when cold. It requires very long crank and eventually will starts. It seems to help a little bit when applying gas pedal but still very hard to start. The fuel pressure is 55 psi, coolant and air charge temperature is about... |
February 11, 2019 | |
| 2003 Chevrolet Monte Carlo SS 3.8L MIL Lamp on VIN: 2G1WX15K03 P0172: Fuel Trim System Rich. ... code P0172 Fuel system too rich. The customer already replaced the upstream 02, MAF, purge valve and the spark plugs. I found the PCV clogged so I replaced that and performed a fuel induction service with no change. LTFT hangs out around -15% and STFT ... |
February 13, 2019 | |
| 2013 Ford Expedition Max Limited 5.4L Surge VIN: 1FMJK2A57D P0172: Rich bank 1. Vehicle came in for surging issue on accel, more noticed on light accel but will do it at any speed. Does not do it all the time. Check fuel pressure and noticed it would randomly jump 5-10 pounds when it got to 50 psi. Replaced pump and now does not go be... |
February 22, 2019 | |
| 2008 Chevrolet Impala LT 3.5L MIL Lamp on VIN: 2G1WT58K78 P0172: Rich fuel condition. ... this car. We have reset it several times withing the last four months and stressed to the customer that they only use E10 or E15 blended gas. It goes for a month or so and resets P0172 rich fuel. When I check the composition it is back around 25%. ... |
February 26, 2019 |
