Need helps with codes P0420 and P0430 - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
 
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#1 Old 06-22-2010, 08:53 AM
weedahoe
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Need helps with codes P0420 and P0430

P0420 - Catalyst System Efficiency Below Threshold (Bank 1)

P0430 - Catalyst System Efficiency Below Threshold (Bank 2)

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate. The downstream O2 sensor reading should be fairly steady. Typically the P0420 code triggers the Check Engine Light if the readings of the two sensors are similar. This is indicative of (among other things) a converter that is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.

-----------------------------------------------------------

So I guess both rear O2's are bad but its weird both go off at the same time. I have cleared the codes and even reset the PCM but they come back.

I have no cats and the CEL for the rear O2's is disabled through custom tuning.

http://dodgeram.info/tsb/2007/18-016-07.htm

Any ideas?

2004 2wd Dodge Ram QC w/a 5.7 with Royal Purple 5w-20 in the motor, RP Max ATF in the trans, 80-90w in the 4.56 Auburn LSD rolling on American Racing Dale Earnhart "Tank" 24s wrapped in Pirelli 325/45/24s (36" tires)

| Debadged | SRT-10 hood | Custom CAI | Fumoto oil valve | 12" of lift | Power Wire | 9007 Bi-Xenon 6k | 9006 Single Beam 6K | 2nd battery tray (2K CCA total) | Big 3 upgrade w/1ga wire | Altezza clear tails w/LEDs | Clear LED 3rd light | 26gal to 35gal fuel tank swap | Viair 380c air compressor | train horns | Ceramic pads (F&R) | Westin Nerfs | Chrome door/tailgate handles | Custom switch panel | Custom center console | B&M QuickSilver floor shifer | Xbox 360 | Audiobahn A8000V (1600w sub amp) | Audiobahn 2002V (400w mid/high amp) | 2 12" Kicker DVC CVRs in a FoxBox | 4 Kicker DS650s (front & rears) | 2 Kicker KS350s (dash) | 2 8" LCD screens in the sunvisors | 2 6" LCD screens in the headrest | Clifford 50.7x alarm | 20/15% tint | Diablo Trinity - custom and 93 tuned | Mopar 6.1 ignition conversion | Start ignition push button | KRC 210 cam | 6.1 springs & pushrods | 6.1 half covers | 180* T-stat | Taurus E-fan | Pacesetter ceramic LTs | dual DMH cutouts | (2) 4x14" round magnaflows | 4x24" tips | X pipe | Jimmy Jammers | Ported (85mm) TB | Innovate LC-1 wideband | Sonnax transmission pressure booster | Mopar slush mats | RBP grill | powder coated calipers | custom rim/grill lights |

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#2 Old 06-23-2010, 12:04 AM
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Try putting in new front sensors and see what happens? Or just buy one and add it in, see if it goes away.

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#3 Old 06-23-2010, 10:38 AM
weedahoe
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Yeah i thought about that but wasnt looking to swap out parts to see what I get and that might not resolve it. But then again, with the truck being an 04 and 73k on it, it might be time to replace all of the O2's anyway.

2004 2wd Dodge Ram QC w/a 5.7 with Royal Purple 5w-20 in the motor, RP Max ATF in the trans, 80-90w in the 4.56 Auburn LSD rolling on American Racing Dale Earnhart "Tank" 24s wrapped in Pirelli 325/45/24s (36" tires)

| Debadged | SRT-10 hood | Custom CAI | Fumoto oil valve | 12" of lift | Power Wire | 9007 Bi-Xenon 6k | 9006 Single Beam 6K | 2nd battery tray (2K CCA total) | Big 3 upgrade w/1ga wire | Altezza clear tails w/LEDs | Clear LED 3rd light | 26gal to 35gal fuel tank swap | Viair 380c air compressor | train horns | Ceramic pads (F&R) | Westin Nerfs | Chrome door/tailgate handles | Custom switch panel | Custom center console | B&M QuickSilver floor shifer | Xbox 360 | Audiobahn A8000V (1600w sub amp) | Audiobahn 2002V (400w mid/high amp) | 2 12" Kicker DVC CVRs in a FoxBox | 4 Kicker DS650s (front & rears) | 2 Kicker KS350s (dash) | 2 8" LCD screens in the sunvisors | 2 6" LCD screens in the headrest | Clifford 50.7x alarm | 20/15% tint | Diablo Trinity - custom and 93 tuned | Mopar 6.1 ignition conversion | Start ignition push button | KRC 210 cam | 6.1 springs & pushrods | 6.1 half covers | 180* T-stat | Taurus E-fan | Pacesetter ceramic LTs | dual DMH cutouts | (2) 4x14" round magnaflows | 4x24" tips | X pipe | Jimmy Jammers | Ported (85mm) TB | Innovate LC-1 wideband | Sonnax transmission pressure booster | Mopar slush mats | RBP grill | powder coated calipers | custom rim/grill lights |

Link to my gallery



Next projects:

- Custom center console
- B&M Quicksilver Floor shifter
- Custom CAI
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#4 Old 06-23-2010, 10:44 AM
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Check this out. It's pretty well detailed and it saved me alot of money.

http://www.p0420.com/
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#5 Old 06-23-2010, 11:02 AM
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THX man, as soon as I get back to my office I will read over it.

2004 2wd Dodge Ram QC w/a 5.7 with Royal Purple 5w-20 in the motor, RP Max ATF in the trans, 80-90w in the 4.56 Auburn LSD rolling on American Racing Dale Earnhart "Tank" 24s wrapped in Pirelli 325/45/24s (36" tires)

| Debadged | SRT-10 hood | Custom CAI | Fumoto oil valve | 12" of lift | Power Wire | 9007 Bi-Xenon 6k | 9006 Single Beam 6K | 2nd battery tray (2K CCA total) | Big 3 upgrade w/1ga wire | Altezza clear tails w/LEDs | Clear LED 3rd light | 26gal to 35gal fuel tank swap | Viair 380c air compressor | train horns | Ceramic pads (F&R) | Westin Nerfs | Chrome door/tailgate handles | Custom switch panel | Custom center console | B&M QuickSilver floor shifer | Xbox 360 | Audiobahn A8000V (1600w sub amp) | Audiobahn 2002V (400w mid/high amp) | 2 12" Kicker DVC CVRs in a FoxBox | 4 Kicker DS650s (front & rears) | 2 Kicker KS350s (dash) | 2 8" LCD screens in the sunvisors | 2 6" LCD screens in the headrest | Clifford 50.7x alarm | 20/15% tint | Diablo Trinity - custom and 93 tuned | Mopar 6.1 ignition conversion | Start ignition push button | KRC 210 cam | 6.1 springs & pushrods | 6.1 half covers | 180* T-stat | Taurus E-fan | Pacesetter ceramic LTs | dual DMH cutouts | (2) 4x14" round magnaflows | 4x24" tips | X pipe | Jimmy Jammers | Ported (85mm) TB | Innovate LC-1 wideband | Sonnax transmission pressure booster | Mopar slush mats | RBP grill | powder coated calipers | custom rim/grill lights |

Link to my gallery



Next projects:

- Custom center console
- B&M Quicksilver Floor shifter
- Custom CAI
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#6 Old 06-23-2010, 11:36 AM
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This is when the non fouler method comes into play when you have no cats. You may have already done that though so maybe more steel wool.

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#7 Old 06-23-2010, 03:38 PM
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I had those CELs disabled through custom tuning.

But are those the codes guys get when they have no non-foulers and are not custom tuned?

2004 2wd Dodge Ram QC w/a 5.7 with Royal Purple 5w-20 in the motor, RP Max ATF in the trans, 80-90w in the 4.56 Auburn LSD rolling on American Racing Dale Earnhart "Tank" 24s wrapped in Pirelli 325/45/24s (36" tires)

| Debadged | SRT-10 hood | Custom CAI | Fumoto oil valve | 12" of lift | Power Wire | 9007 Bi-Xenon 6k | 9006 Single Beam 6K | 2nd battery tray (2K CCA total) | Big 3 upgrade w/1ga wire | Altezza clear tails w/LEDs | Clear LED 3rd light | 26gal to 35gal fuel tank swap | Viair 380c air compressor | train horns | Ceramic pads (F&R) | Westin Nerfs | Chrome door/tailgate handles | Custom switch panel | Custom center console | B&M QuickSilver floor shifer | Xbox 360 | Audiobahn A8000V (1600w sub amp) | Audiobahn 2002V (400w mid/high amp) | 2 12" Kicker DVC CVRs in a FoxBox | 4 Kicker DS650s (front & rears) | 2 Kicker KS350s (dash) | 2 8" LCD screens in the sunvisors | 2 6" LCD screens in the headrest | Clifford 50.7x alarm | 20/15% tint | Diablo Trinity - custom and 93 tuned | Mopar 6.1 ignition conversion | Start ignition push button | KRC 210 cam | 6.1 springs & pushrods | 6.1 half covers | 180* T-stat | Taurus E-fan | Pacesetter ceramic LTs | dual DMH cutouts | (2) 4x14" round magnaflows | 4x24" tips | X pipe | Jimmy Jammers | Ported (85mm) TB | Innovate LC-1 wideband | Sonnax transmission pressure booster | Mopar slush mats | RBP grill | powder coated calipers | custom rim/grill lights |

Link to my gallery



Next projects:

- Custom center console
- B&M Quicksilver Floor shifter
- Custom CAI
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#8 Old 06-23-2010, 04:22 PM
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#9 Old 06-23-2010, 04:46 PM
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Yeah the non fouler method was mostly due to bypass those two codes for highflows or catlass setups. Dont know if that is your reason though since you had it removed via tuner.

This is from 06 when there was no 02 delete option yet.

http://www.dodgetalk.com/forums/show...ht=fix+foulers

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