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Automotive Repair Car Troubleshooting Topics   Car Troubleshooting   Engine Troubleshooting   Engine Fault Codes   Electrical and Wiring   Transmission Problems Car Repair Topics   Car Making Noises   Car Stereo Repair   Heating or AC Issues   Motorcycles and ATVs   Tricks of the Trade   Truck Repair Advice Site Options:      Login   Sign up here! Latest Forum Post   2006 Toyoto Camry XLE Driver Side Electric Window Trouble Hello, Looking for a little brain help ...   Tierod end change caused some kind of leak Hello so I just took my car to the nearb...   2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes When I bought this car in summer 2023, a... Grounding Cable, 2017 Jeep Renegade Trailhawk The Cable that connects my negative batt... Rough Idle (Found new thing) Hi everyone. First of all sorry for bad ...     equipment hey yall. im a first year engineering st...   HELP I have a 1956 1/2 ton panel truck, 69 35...   Howdy     Just wanted to s...   ABS/Tractiob/Brake Lights on But No DTCs Hello all, Recently while driving m...   Chevy strut replacement I'm trying to get a sensor of some kind ...

Search Auto Parts Search Catalytic converter efficiency below threshold bank 1 Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Car Troubleshooting homerunkin1221 New User Feb 24, 2011, 9:10 PM Post #1 of 3 (4321 views) Catalytic converter efficiency below threshold bank 1 Sign In I have a 2000 subaru legacy gt limited with 110000 miles on it. I've gotten the code from the title above for about the last year now off an on. I am not sure if it is due to a bad oxygen sensor or the catalytic converter. Another funny thing I have noticed is that whenever i turn the heater on the fumes get horrible in the car, not sure if this is related or not. I took some data of the O2 sensor so you can help me determine if maybe I have a laggy o2 sensor Hammer Time Ultimate Carjunky / Moderator Feb 24, 2011, 9:20 PM Post #2 of 3 (4317 views) Re: Catalytic converter efficiency below threshold bank 1 Sign In If you're getting a PO420, then you need to replace the cat. You shouldn't be seeing all that cross counting in a downstream sensor. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional. homerunkin1221 New User Feb 24, 2011, 10:03 PM Post #3 of 3 (4309 views) Re: Catalytic converter efficiency below threshold bank 1 Sign In thank you I appreciate it. I kind of figured that was the case.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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