DTC P2099 - Post Catalyst Fuel Trim System Too Rich (Bank 2)
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P2099 - POST CATALYST FUEL TRIM SYSTEM TOO RICH (BANK 2)
| Description: | The PCM monitors the correction value from the heated oxygen sensor bank 2, sensor 2 (HO2S22) as part of the fore-aft oxygen sensor control routine. This DTC sets when the correction value is greater than a calibrated limit. | ||
| Possible Causes: |
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| Diagnostic Aids: | Inspect the connectors for signs of damage, water intrusion or corrosion. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST DZ . | ||