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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 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 ...   2020 suburban new transmission and issues after install recently had the transmission fail at 11...   2011 Dodge Nitro OBD scanner seems to drain battery in 10-20 minutes When I bought this car in summer 2023, a...   Caliper piston post cleaning won't screw in Hello, 2013 Hyundai Elantra limited (ma...

Search Auto Parts Search SNUNEZ Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Engine ODB2 Fault Codes SNUNEZ New User Jan 19, 2013, 1:33 PM Post #1 of 3 (3940 views) SNUNEZ Sign In 2006 altima 2.5 auto transmission code p0420 please help Hammer Time Ultimate Carjunky / Moderator Jan 19, 2013, 1:51 PM Post #2 of 3 (3930 views) Re: SNUNEZ Sign In Replace the bank 1 Catalytic Converter. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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. Discretesignals Ultimate Carjunky / Moderator Jan 21, 2013, 7:03 PM Post #3 of 3 (3880 views) Re: SNUNEZ Sign In Before you go spending a whole lot of money on a cat, you might want to swing into your local dealer and see if the PCM's calibration is up to date. Classification: EC10-014 Reference: NTB10-083 Date: July 8, 2010 2005 - 2006 ALTIMA WITH QR25DE ENGINE AND 50 STATE EMISSIONS; MIL ON WITH DTC P0420 APPLIED VEHICLE: 2005-2006 Altima (L31) APPLIED ENGINE: QR25DE* Engine Only * 50 State emission specification ONLY IF YOU CONFIRM:DTC P0420 (Catalyst System Efficiency Below Threshold) is stored in the ECM. ACTION: Determine if this bulletin applies by checking the ECM Part Number.^ You will do this by performing Step A in the SERVICE PROCEDURE. If this bulletin applies, reprogram the ECM and perform P0420 DTC Confirmation. ^ You will perform Step B and C in the SERVICE PROCEDURE. If this bulletin does not apply, refer back to ASIST and the Electronic Service Manual (ESM) for further diagnostic and repair information. Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.   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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