P0172 Diagnostic Trouble Code Discussion for September 2015
Fuel System Rich (Bank 1)
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| Help Request | Posted | |
| 2005 Buick Rainier CXL Plus 5.3L MIL Lamp on VIN: 5GAET13M45 P0172: Fuel System Rich (Bank 1). This Buick will very intermittently set these codes, puzzling that it sets rich & lean faults, customer reports no symptoms at all. Last time it was in for oil change it also had a P0101 mass airflow code, cleaned mass airflow sensor during service, had be... |
September 09, 2015 | |
| 2003 Mercedes-Benz C230 Kompressor 1.8L Mixture adaptations VIN: WDBRN40JX3 P0172: Mixture too rich part load. Idle adaptation above rich limit (additive) means ECU cannot add enough fuel to keep within normal range. Part load is following, but not out of range, full load doesn't notice. This means air leak, but I'm not finding it. Vent hose good, no smoke getting out.... |
September 10, 2015 |
