P2099 Diagnostic Trouble Code Discussion for April 2021
Downstream Fuel System Rich - HO2S-22 (Bank 2 Sensor 2)
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| Help Request | Posted | |
| 2017 Chevrolet Silverado 1500 LT 5.3L MIL Lamp on VIN: 3GCUKREC7H P2099: Post Catalyst Fuel Trim System High Limit Bank 2. P2097/P2099 return after approximately 50 miles or more. Truck runs fine and no obvious issues other than check engine light. So far, checked intake for vacuum leaks, checked MAF performance, checked intake tract for proper assembly, checked fuel system... |
April 28, 2021 |
