P0172 Diagnostic Trouble Code Discussion for May 2023
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2015 Chevrolet Silverado 1500 LT 5.3L Misfire, MIL Lamp on VIN: 1GCVKREC8F P0172: rich bk1. I have not duplicated the missfire yet but counts high on # 5.With mpfi I would pin out injector circuit and check pulse with noid light, and ohm out injector. Looking for direction as being first dfi, injectors are not accessible and there is high voltage... |
May 05, 2023 | |
| 2002 Ford Mustang GT 4.6L Excessive Emissions, Poor Idle Quality, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1FAFP42X92 P0172: Rich. I need help from my Ford experts. I got this 02 mustang that wont stop running rich. I've replaced both upstream and downstream O2's with NTK sensors. The PCV vacuum hose was rigged up with heater hose and collapsed when running so I repaired that correctl... |
May 09, 2023 |
