× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2004 Subaru Outback 2.5L MIL Lamp on
Posted to Asian Driveability on 2/19/2007 8 Replies

Cel still coming on, code P0420. No other codes. We have replaced cat convertor with dealer cat. Convertor was previously replaced in 2005 at 70k miles. We also replaced 3 O2 sensors. Engine runs fine. Vehicle is driven about 300 freeway miles daily. We have c...

8 Replies Received (View Replies)

  Related Documents & Media  2004 Subaru Outback

 
Message Closed w/FIX

car Vehicle Data

2004 Subaru Outback

VIN 4S3BH67554
Engine2.5 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)
Message Closed w/FIX

car Vehicle Data

2004 Subaru Outback

VIN 4S3BH67554
Engine2.5 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

P0420Catalyst Efficiency Below Threshold (Bank 1)