P0172 Diagnostic Trouble Code Discussion for January 2019
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 1998 Honda Civic DX 1.6L MIL Lamp on VIN: 1HGEJ6227W P0172: Fuel System Too Rich. ... light is on for P0170 Fuel trim problem and P0172 System too rich B1. So the first thing I did was watch the fuel trims with the scan tool at closed loop and the LT is -15%, ST is -11% at idle at 2,000 rpms the ST han... |
January 04, 2019 | |
| 2011 Toyota Camry LE 2.5L Runs Rich VIN: 4T4BF3EK2B P0172: System Too Rich. After the original repairs the P0172 trouble code appeared. After resetting the fuel trims, the short term fuel trim will climb to -21.6 % within seconds. The engine load is at 36.8 % and the MAF at idle is at 5-6.5 G/S. It also is a California emission ve... |
January 11, 2019 | |
| 2003 BMW X5 3.0i 3.0L MIL Lamp on VIN: 5UXFA53533 P0172: rich bank 1. This car came in 3 weeks ago for a lean codes bank 1 and 2. The DIAS valve located in the intake had a leak, smoke test reviled leak from valve. Replaced the valve cleared codes. The car is now back with rich codes. Long term was -8.6 both banks o2s look g... |
January 29, 2019 | |
| 2003 BMW X5 3.0i 3.0L MIL Lamp on VIN: 5UXFA53533 P0172: rich bank 1. This car came in 3 weeks ago for a lean codes bank 1 and 2. The DIAS valve located in the intake had a leak, smoke test reviled leak from valve. Replaced the valve cleared codes. The car is now back with rich codes. Long term was -8.6 both banks o2s look g... |
January 30, 2019 |
