Engine Light ON (or Service Engine Soon Warning Light)
The Powertrain Control Module (PCM) monitors the correction value from downstream Heated Oxygen Sensor(HO2S) as part of the fore-aft oxygen sensor control routine. The test fails when correction value is greater than a calibrated limit.
P2098 Information for specific makes
P2098 AUDIPost Catalyst Fuel Trim System Too Lean Bank 2
P2098 BMWOxygen Sensor Before Catalytic Converter 2 Trim Control
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