P0172 Diagnostic Trouble Code Discussion for May 2014
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 1999 Chevrolet Tahoe LS 5.7L MIL Lamp on, Intermtnt hard start VIN: 1GNEK13RXX P0172: Fuel Trim System Rich (Bank 1). ... p0172 and p0175. Intermittent hard to start cold. Fuel injection unit updated to mpi about 6 months ago to correct rich codes. Customer does not drive truck much, but cel came on last week, only 1300 miles since repair. Testing fuel pressure is good, but w... |
May 05, 2014 |
