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2017 Subaru Forester 2.0L MIL Lamp on, p2270
Posted to Asian Driveability on 1/28/2026 7 Replies

looking for assistance the Cat monitor, 02 monitor,EVAP monitor will not set and P2270 shows up but the light has not come on for it I have replaced B1S2 sensor with OEM sensor swapped a known good MAF sensor cleaned MAP [...] for vac. leaks checked for ex...

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car Vehicle Data

2017 Subaru Forester

VIN [No VIN Available]
Engine2.0 L / 4 cyl
DeliveryFuel Injection / port injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp on, P2270
Misc.2.0 Turbo

Trouble Codes

P2270Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Stuck Lean
Open Help Request

car Vehicle Data

2017 Subaru Forester

VIN [No VIN Available]
Engine2.0 L / 4 cyl
DeliveryFuel Injection / port injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp on, P2270
Misc.2.0 Turbo

Trouble Codes

P2270Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Stuck Lean