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2002 Subaru Forester 2.5L MIL Lamp on
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%...
FIX posted 12/18/2009
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Related Documents & Media | VIN | JF1SG63673 |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / gas |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0130 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Malfunction |
| P0171 | Fuel System Too Lean (Bank 1) |
Message Closed
Vehicle Data
2002 Subaru Forester
| VIN | JF1SG63673 |
| Engine | 2.5 L / 4 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / gas |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0130 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Malfunction |
| P0171 | Fuel System Too Lean (Bank 1) |
Video