P2098 Mazda Post Catalyst Fuel Trim System Too Lean Bank 2
Possible causes
– Faulty Heated Oxygen Sensor
– Heated Oxygen Sensor harness is open or shorted
– Heated Oxygen Sensor circuit poor electrical connection
– Exhaust leaks
– Contaminated Heated Oxygen Sensor
– Heated Oxygen Sensor harness is open or shorted
– Heated Oxygen Sensor circuit poor electrical connection
– Exhaust leaks
– Contaminated Heated Oxygen Sensor
Tech description
Before replacing the Heated Oxygen Sensor, inspect the sensor connector for signs of damage, water ingress, or corrosion
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P2098 Mazda Description
The Powertrain Control Module (PCM) monitors the correction valuer 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.
Mazda Vehicle:Mazda B-Series, Mazda CX-7,Mazda CX-9,Mazda MAZDA2,Mazda MAZDA3,Mazda MAZDA5,Mazda MAZDA6,Mazda Miata MX-5,Mazda RX-8,Mazda Tribute,Mazda RX-8,Mazda MX-5,Mazda CX-9,Mazda Atenza,Mazda Axela,Mazda Tribute,