P0172 Diagnostic Trouble Code Discussion for November 2007
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2000 Toyota Sienna LE 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4T3ZF13C9Y P0172: Fuel System Too Rich (Bank 1). ... rough. P0172 bank 1 rich, p0300, p0301, p0305. Tested the ignition system and all is well. Plugs were not wet or fouled. It even had the correct Denso plugs. Next I smoke checked for vacuum leaks, none found. Tested the MAF sensor, Normal waveform. Tested ... |
November 01, 2007 | |
| 1997 Mercury Villager GS 3.0L MIL Lamp on VIN: 4M2DV1114V P0172: Fuel Trim Rich (Bank 1). I am out of ideas I need help!! This thing is rich all the time o2 sits at .750 to .800 mV all the time. Put gas anilyzer in tail pipe it conferms its rich. Fuel trims are at -25%. Installed new o2,cleaned MAF no change. Check fuel pressure at 48 psi engine ru... |
November 05, 2007 | |
| 2003 Mercedes-Benz C230 Kompressor 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WDBRN40J53 P0172: bank 1 system too rich. ... with 271 motor. intermittently misfires with code P0302 and P0172 system too rich bank 1, on my diagnoses and looking the scanner parameters all normal mas air flow sensor and catalytic converter ok, I am guessing and acts like a major vacuum leak. any ide... |
November 08, 2007 | |
| 2004 Volvo S40 i 2.4L MIL Lamp on VIN: YV1MS38224 P0172: System too rich - Bank 1. ... came in with no symptoms other than check engine light on. Pulled code P0172 for rich exhaust. Freeze frame data only showed LT fuel trim at -4.5 and ST fuel trim at about -2. While I was watching the fuel trims under various loads and operating conditions... |
November 26, 2007 | |
| 2003 GMC Envoy XL SLE 4.2L Hesitation, Surge, Cuts out VIN: 1GKET16573 P0172: System rich Bank 1. Hello all again, I'm desperate this time(as always I guess). This envoy very intermittently acts up and when it does there is no response from the throttle pedal (engine just idles) and the (I believe it to be) low power light comes on. This can be corrected i... |
November 28, 2007 | |
| 2003 GMC Envoy XL SLE 4.2L Hesitation, Surge, Cuts out VIN: 1GKET16573 P0172: System rich Bank 1. Hello all again, I'm desperate this time(as always I guess). This envoy very intermittently acts up and when it does there is no response from the throttle pedal (engine just idles) and the (I believe it to be) low power light comes on. This can be corrected i... |
November 29, 2007 |
