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2002 Subaru Forester 2.5L MIL Lamp on
Posted to Asian Driveability on 11/5/2009 4 Replies

po171/po130 codes. checked fuel pressure, vac leaks ok. monitored ect,map,iat all within specs. b1s1 afr stays at 3.8v+, i think it should be .85-1.1v. post cat 02 reads rich at time but can be driven lean. afr does not [...] trim with 1st new sensor read st0%...

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  Related Documents & Media  2002 Subaru Forester

 
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car Vehicle Data

2002 Subaru Forester

VIN JF1SG63673
Engine2.5 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / gas
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0130Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Malfunction
P0171Fuel System Too Lean (Bank 1)
Message Closed

car Vehicle Data

2002 Subaru Forester

VIN JF1SG63673
Engine2.5 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / gas
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0130Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Malfunction
P0171Fuel System Too Lean (Bank 1)