2002 Subaru Outback 2.5L MIL Lamp on
PO420 returns after driving vehicle approx 100 miles. Downsteam o2 voltage fluctuates indicating cat not working. No exhaust leaks or other codes,datastream looks normal
FIX posted 1/27/2010
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Message Closed w/FIX
Vehicle Data2002 Subaru Outback
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2002 Subaru Outback
VIN | 4S3BH67562 |
Engine | 2.5 L / 4 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | After Drive Cycle |
Trouble Codes
P0420 | Catalyst Efficiency Below Threshold (Bank 1) |