P2270 Mitsubishi O2 Sensor Signal Stuck Lean Bank 1 Sensor 2
Possible causes
– Faulty Heated Oxygen Sensor Bank 1 Sensor 2
– Heated Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted
– Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
– Heated Oxygen Sensor Bank 1 Sensor 2 harness is open or shorted
– Heated Oxygen Sensor Bank 1 Sensor 2 circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P2270 Mitsubishi Description
The rear heated oxygen sensor is mounted on the rear side of the Catalytic Converter (warm-up catalytic converter) or in the rear exhaust pipe, which is able to detect catalyst efficiency. The rear heated oxygen sensor (HO2S) produces a voltage between 0V and 1V. This rear heated oxygen sensor is used to estimate the oxygen storage capability. If a catalyst has good conversion properties, the oxygen fluctuations are smoothed by the oxygen storage capacity of the catalyst. If the conversion provided by the catalyst is low due to aging, poisoning or misfiring, then the oxygen fluctuations are similar to signals from the front oxygen sensor.
Mitsubishi Vehicle:Mitsubishi Aspire,Mitsubishi Airtrek,Mitsubishi Adventure,Mitsubishi Galant,Mitsubishi Tredia,Mitsubishi Strada,Mitsubishi RVR,Mitsubishi Pajero,Mitsubishi Outlander,Mitsubishi Montero Sport,Mitsubishi Mirage,Mitsubishi Libero,Mitsubishi Legnum,Mitsubishi Lancer,Mitsubishi i Miev,Mitsubishi GTO,Mitsubishi FTO,Mitsubishi Eterna,Mitsubishi eK,Mitsubishi Eclipse,Mitsubishi Diamante,Mitsubishi Delica,Mitsubishi Cordia,Mitsubishi Chariot,Mitsubishi Challenger,Mitsubishi Carisma,Mitsubishi Eclipse,Mitsubishi Endeavor,Mitsubishi Galant,Mitsubishi Lancer,Mitsubishi Outlander,Mitsubishi Raider,