P0172 Diagnostic Trouble Code Discussion for October 2016
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2007 Chevrolet Silverado 1500 Classic LT 5.3L Excessive Emissions, Runs rich VIN: 2GCEK13Z97 P0172: System too rich bank 1. ... range) p0172 (too rich bank 1) p0175 (too rich bank 2). Replaced the maf sensor with new delfi unit. P0101 went away but system still way too rich. Swapped map with known good one, no change. Checked fuel pressure, good at 60psi. Coolant temp sensor is goo... |
October 06, 2016 | |
| 2011 BMW 750i xDrive 4.4L MIL Lamp on VIN: WBAKC6C59B P0172: Bank 2 is running rich. Has anyone seen injectors going bad on these N63 motors. We checked pcv system, it's OK. |
October 12, 2016 | |
| 2004 Hyundai Elantra GLS 2.0L Excessive Emissions, MIL Lamp on VIN: KMHDN46D44 P0172: Fuel System Too Rich (Bank 1). ... Engine runs good. Hooked up computer and had code P0172 Fuel system rich. Checked data and noticed fuel ratio sensor at 2000 milli volts. Replaced upstream air fuel ratio sensor. Voltage is still reading high and fuel trim is at -19%. If a vacuum leak is c... |
October 25, 2016 | |
| 1997 Chevrolet S10 2.2L Excessive Emissions, Hesitation, Stall, MIL Lamp on VIN: 1GCCS1447V P0172: Fuel System Rich. ok here it goes, got this truck from another shop. they put a motor in it for why i do not know why. running rough misfires on 1 and 3. reran ignition wires. put 4 injectors in because they were leaking down filling cylinders. running better but still will kil... |
October 29, 2016 | |
| 1997 Chevrolet S10 2.2L Excessive Emissions, Hesitation, Stall, MIL Lamp on VIN: 1GCCS1447V P0172: Fuel System Rich. ok here it goes, got this truck from another shop. they put a motor in it for why i do not know why. running rough misfires on 1 and 3. reran ignition wires. put 4 injectors in because they were leaking down filling cylinders. running better but still will kil... |
October 31, 2016 |
