P0420 Catalyst System Low Efficiency ???? - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
 
Thread Tools
#1 Old 12-14-2009, 09:32 AM
25HEMI00
25HEMI00
 
25HEMI00's Avatar
 
Join Date: Jun 2007
Location: east quogue
Posts: 1,064
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
P0420 Catalyst System Low Efficiency ????

any ideas?

i've reset it a couple times, still keeps comming on. could it have anything to do with a y pipe and high flow cat that i installed over the summer?

2003 Hemi Ram 2500 Sold
Current:
1999 Ram 2500 v8 Reg Cab<<<<Rescued from Auction Lot!
Completely put her back together and installed:
7'6 Western plow<< redesigned 1500 carriage and made brackets for 2500
hughes plenum repair+93 octane=no more ping
25HEMI00 is offline  
Sponsored Links
Advertisement
 
#2 Old 12-14-2009, 10:13 AM
otnielarencibia
1RAM2NV
 
otnielarencibia's Avatar
 
Join Date: Feb 2006
Location: Pompano
Posts: 1,770
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
......most likely. It'll throw it if you have no cats as well.

2004 Dodge Ram Hemi Sport (flame red)

Inertia built forged hemi, 6.1l crank, Manley flat top pistons 9:5:1 compression, K1 rods, ARP main bolts and head studs, 6.1l springs and retainers, 6.1l push rods, 6.1l oil pump, Inertia custom turbo cam, Custom 24x12x4 front mount intercooler, sts turbo, T76 Turbonetics Q trim 76mm, sts electric boost controller, Diablosport tuned, custom billet fuel rails, 255lph Holley fuel pump, XRP racing fuel fittings and hoses, SRT-4 map sensor, 80# Siemens racing injectors, MSD spark plug wires, NGK 4306 spark plugs, Autometer boost gauge, Autometer egt gauge, Aeroforce scan gauge, PLX device DM-100 Air/Fuel wideband, Tick Performance stage 2 t56 6 speed, ARP flywheel and pressure plate bolts, JMB Performance viper clutch hydraulics, Quick Time bell housing, kevlar clutch, B&M shifter, srt10 front brakes, srt10 dana 60 rear axle 4.56 gears, Eibach 2/4 drop, Eibach pro damper shocks, Belltech rear sway bar, mark vii efan, 180 degree MotoRad thermostat, 15% UD ATI Damper, smaller ALT pulley, Flowmaster y-pipe, Magnaflow straight though muffler, Tekonsha Prodigy P3 brake controller, Kenwood HU and component speakers, MTX amp and subs.........
That Hemi 6 speed AND got a turbo?!?!
My truck whistles club!!! member #2
480rwhp/522 lbs. rwtq at 7 lbs of boost

otnielarencibia is offline  
#3 Old 12-14-2009, 11:53 AM
25HEMI00
25HEMI00
 
25HEMI00's Avatar
 
Join Date: Jun 2007
Location: east quogue
Posts: 1,064
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
is there anything i can do or am living with a check engine light?

2003 Hemi Ram 2500 Sold
Current:
1999 Ram 2500 v8 Reg Cab<<<<Rescued from Auction Lot!
Completely put her back together and installed:
7'6 Western plow<< redesigned 1500 carriage and made brackets for 2500
hughes plenum repair+93 octane=no more ping
25HEMI00 is offline  
#4 Old 12-14-2009, 01:29 PM
TheSatinPumpkin
Low N Slow
 
TheSatinPumpkin's Avatar
 
Join Date: Aug 2004
Posts: 4,449
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You can try the non fouler method. Few detailed threads about it. Lots of people have been succesful.

_- under construction -_

TheSatinPumpkin is offline  
#5 Old 12-14-2009, 08:04 PM
eaton
The Walt-n-ator
 
eaton's Avatar
 
Join Date: Aug 2005
Location: Denton
Posts: 2,490
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
That's the same code I had when my Passenger-side cat went bad. It may be throwing a code due to the high-flow cat. I'd try the non-fouler mod before you change the cat.

07' Ram 1500 QC 5.7L Lonestar Edition
Exterior:
Chrome Tubular Upper Grill - Polished Billet Bumper Grill - Polished Billet Fuel Door - 10" Black Shorty Antenna - Silver Antenna Bezel - Black Painted "B" Pillars - 22x9.5" Chrome Liquid Metal Lithium 5 wheels - 305/40-22 Nitto NT420s Tires - Belltech 2/5 Drop with Street Performance Shocks (#810SP) - Retrofit Morimoto Mini D2S 2.0 Headlight Projectors - Gatling Gun Shrouds - D2S 6000k HID Bulbs - AMP bulb adaptors - Color-Matched Headlight Bezels - Smoked Turn Signal Reflectors - Chrome Turn Signal Stealth Bulbs - 9006 HID Foglights 6000k - Smoked LED 3rd Brake Light - Smoked LED Tail Lights - 6k LED reverse Lights (3157) - LINE-X Bedliner - Street Scene Gen 2 Steel Roll Pan - Mopar Rear Wheel Well Liners
Interior:
Factory Infinity System...Gone, Finally! - Kenwood KDC-MP2035 Head Unit - Kenwood iPhone Interface - Peripheral CHYAH05 CANbus Interface (No More DTC's) - Infinity Reference 6-1/2" Components (2 Pair) - Infinity Kappa Perfect 10.1 Subwoofers (2) - Profile AP1040 80x4 RMS - Profile AP2000 320x2 RMS - Tsunami 2-Farad Capacitor - SteetWires Wiring w/ 200-Amp Main Fuse - Custom Fiberglass Subwoofer Enclosure - 100 sq./ft. FatMat - Billet Technology Satin HVAC Knobs - Billet Technology Satin Headlight Knob - Polished Billet Ribbed Cigarette Lighter - Chrome HVAC Vent Covers - Window Tint (35% Front Doors / 5% Windshield Strip, Rear Doors, & Rear window) - Silver Center Dash Bezel - Silver Door Panel Spears - Silver Front Door Window Switch Bezels - Silver Rear Window Switch Bezels - Silver Steering Wheel Bezels - Silver Overhead Console Bezel - Silver Dome Light Bezel - Silver Door Lock Bezels - Smoked Door Reflectors

Performance:
AirAid MIT - K&N Drop-in Filter - Superchips Flashpaq (#3865) w/ Trans Tuning - BBK Headers (#4009) - Mopar Header Gaskets - 2.5" Custom Tubing from Cats to Magnaflow Y - Magnaflow Y-Pipe 2.5" DI/3" SO (#10778) - Magnaflow 6" Round Muffler 3" SI/SO (#12619) - Jet 180* Thermostat (#10183) - Motive 4.56 Gears LSD - PowerStop Cross-Drilled/Slotted Rotors F/R & Powerstop Evolution Z16 Ceramic Pads F/R (#2164) - Black Painted Calipers/Brackets

eaton is offline  
#6 Old 12-14-2009, 08:11 PM
FAhemiST
Gold Member
 
Join Date: Nov 2007
Location: Ulster County
Posts: 924
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
your pcm thinks your cat is bad because it was replaced with a hi flow. you can try the steel wool trick or i used o2 sims which pull the o2 sensor out of the exhaust stream a little. you can find them here http://moesperformance.com/index.php...8924c60d64dfd1
FAhemiST is offline  
#7 Old 12-14-2009, 10:23 PM
otnielarencibia
1RAM2NV
 
otnielarencibia's Avatar
 
Join Date: Feb 2006
Location: Pompano
Posts: 1,770
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
http://www.dodgetalk.com/forums/showthread.php?t=270306
Didn't work for me.

2004 Dodge Ram Hemi Sport (flame red)

Inertia built forged hemi, 6.1l crank, Manley flat top pistons 9:5:1 compression, K1 rods, ARP main bolts and head studs, 6.1l springs and retainers, 6.1l push rods, 6.1l oil pump, Inertia custom turbo cam, Custom 24x12x4 front mount intercooler, sts turbo, T76 Turbonetics Q trim 76mm, sts electric boost controller, Diablosport tuned, custom billet fuel rails, 255lph Holley fuel pump, XRP racing fuel fittings and hoses, SRT-4 map sensor, 80# Siemens racing injectors, MSD spark plug wires, NGK 4306 spark plugs, Autometer boost gauge, Autometer egt gauge, Aeroforce scan gauge, PLX device DM-100 Air/Fuel wideband, Tick Performance stage 2 t56 6 speed, ARP flywheel and pressure plate bolts, JMB Performance viper clutch hydraulics, Quick Time bell housing, kevlar clutch, B&M shifter, srt10 front brakes, srt10 dana 60 rear axle 4.56 gears, Eibach 2/4 drop, Eibach pro damper shocks, Belltech rear sway bar, mark vii efan, 180 degree MotoRad thermostat, 15% UD ATI Damper, smaller ALT pulley, Flowmaster y-pipe, Magnaflow straight though muffler, Tekonsha Prodigy P3 brake controller, Kenwood HU and component speakers, MTX amp and subs.........
That Hemi 6 speed AND got a turbo?!?!
My truck whistles club!!! member #2
480rwhp/522 lbs. rwtq at 7 lbs of boost

otnielarencibia is offline  
#8 Old 12-15-2009, 06:31 AM
compressor man
Senior Member
 
compressor man's Avatar
 
Join Date: Sep 2008
Posts: 3,960
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I had a p0430 cat bank 2 code come up a couple times while towing my trailer across country. I had my BBK shortys and mag Y installed before the trip and changed from the Edge to the SC tuner, and got this code 3 times in 2800 miles. Hasn't come back since I stopped towing.


FRI'D 2007 Bright Silver QC 4X4 HEMI SLT SPORT. In the 13's
compressor man is offline  
Closed Thread


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
P0420 Catalyst System Low Efficiency 25HEMI00 3G Dodge RAM - General Talk 4 10-16-2009 01:02 AM
P0420 Catalyst System Efficiency Below Threshold (Bank 1)? kna4977 Dodge B-Series Vans 1971 - 2003 5 09-21-2009 05:28 PM
How do you fix a Low Catalyst Effiency Bank 1 code P0420 projnostic 3G Dodge Ram Performance Talk 17 02-07-2009 08:34 AM
P0420 1/1 Catalytic Converter Efficiency zstar5g 1G Dodge Durango - Drivetrain Talk 12 03-31-2008 03:45 PM
P0430 Catalyst System Efficiency below Limit - Bank No 2. Daytona_Dan Dodge Caravan General Talk 1 12-19-2007 11:29 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome