Car Problem Reports

Subaru Forester Check Engine Light Due to Failed Catalytic Converter

 
Subaru Forester Problem
88 Reports
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Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011

Average Mileage: 101,659 mi (11,000 mi - 275,000 mi)

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The Check Engine Light may illuminate because of low catalytic converter efficiency. This same issue may cause the car to fail the State Smog Test if one is required.

  • Visitor, , 78,000 mi

    check engine light plus flashing cruise control light..... the catalytic converter was replaced by subaru because of being under warranty, but...less than 60,000 miles later the same problem has shown up again. this time no warrenty because the replacemnet part in only good for 12 months. now they (Subaru dealer) wants 95$ to tell me what another local mechanic has already diagnosed (for free) plus it will cost me 800-900$ for the part plus labor to install (approx. 1600-1800$.....come to find out my car will continue to run properly without this "new " part but, the flashing lights wil continue. does anyone know if this sensor can be disconnected?

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  • Visitor, , 202,000 mi

    Check engine light has been on for several years. Techs have told me I needed a new catalytic converter and yesterday one said that I need a new oxygen sensor to fix it. I will do neither because I understand that it is a reoccurring problem causing owners hundreds of dollars. I won't throw good money after bad especially since this issue is not affecting the operation of the car.

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  • Visitor, , 140,000 mi

    Forester: check engine light (and cruise light) on after replacing the timing belt. Mechanic says it is the catalytic converter and cost to replace is about $1000 (upstate NY)

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  • Visitor, , 166,000 mi

    P0420 Catalyst Efficiency Below Threshold Bank

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  • Visitor, , 116,500 mi

    The second time the Cat. converter went. First time it was covered by Subaru. Not this time

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  • Visitor, , 44,000 mi

    THE SUBARU DEALER SAID THEY COULDNT FIGURE A REASON FOR THE CHECK ENGINE LIGHT COMING ON. I DID NOT KNOW ABOUT THE CATALYTIC CONVERTER RECALL. MY GAS MILEAGE STARTED DECREASING WHEN THE CHECK ENGINE LIGHT CAME ON. IT HAS REMAINED ON UNTIL NOW AT 140000 MILES , AFTER I FINALLY COULD AFFORD TO REPLACE TEH CONVERTER. THEY NEVER ACKNOWLEDGE THIS FAULT WHEN I BROUGHT IT IN AT 44000 MILES AND I DIDN'T KNOW ABOUT THE RECALL THEN.

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  • Visitor, , 65,000 mi

    replaced catalytic converter less than 1 yr ago. now faced with same problem.

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  •  Enthusiast

    The check engine light has been on for a while and we are waiting to replace the catalytic converter until we are sure that will solve the problem. It is more an annoying than problematic at this point

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  • Visitor, , 185,420 mi

    light is on and i dont think its my cat. think it might be the O2 sensors.. checking it out

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  • Visitor, , 49,000 mi

    Cruise was flashing and the check engine light came on at the same time. Dealership told me they replaced the catalytic converter; still under warranty so it was free.

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