P0430 Code - TundraTalk.net - Toyota Tundra Discussion Forum
User Tag List

 
LinkBack Thread Tools
post #1 of 14 (permalink) Old 08-13-2010, 11:47 AM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 30
Thanks: 2
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
(Thread Starter)
P0430 Code

I got a P0430. Does this really mean that the catalytic converter is toast? Or could it be an O2 sensor? Do we have one or two cats on the truck? It's an 03 V8 AWD with 94,000 miles.

Also, how bad is it driving with a bad cat? Will I damage it further, or is it just a matter of not passing emissions testing?

2003 Tundra V8 4x4 Access Cab TRD Offroad Edition, 157,000km
2004 Mazda RX-8 GT, Fully Loaded with Nav, 101,000km

Last edited by Silver02TDI; 08-13-2010 at 11:55 AM.
Silver02TDI is offline  
Sponsored Links
Advertisement
 
post #2 of 14 (permalink) Old 08-13-2010, 01:51 PM
Senior Member
 
toyodatech79's Avatar
 
Join Date: May 2010
Location: Surprise, Az
Posts: 368
Thanks: 21
Thanked 83 Times in 58 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Gas leakage from exhaust system
A/F sensor (bank 2 sensor 1)
HO2 sensor (bank 2 sensor 2)
Front No. 2 exhaust pipe assembly (TWC: Front Catalyst and Rear Catalyst)

These are the possible list of causes from TIS. Sounds to me like you need a catalytic converter on bank #1, that is the right side of truck. Its not uncommon. You probably wont damage anything, but you wont pass emissions and may get worse gas mileage

2010 DC 5.7L 4x2

Current mods:
TRD Supercharger
Rev-Tech 3" lift
Fuel Octane 20x9 wheels
Nitto Terra Grappler 305/55/20
5% all windows 35% windshield
Sequoia front door handles
Color matched grille, no more chrome
DDM Tuning 55w 6000k low beams
DDM Tuning 35w 6000k fog lights

Future mods:
BHLM
Exhaust
Interior (leather seats and suede headliner)
Stereo
Front and rear strobe light kit
toyodatech79 is offline  
The Following User Says Thank You to toyodatech79 For This Useful Post:
Silver02TDI (08-17-2010)
post #3 of 14 (permalink) Old 08-14-2010, 09:23 PM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 30
Thanks: 2
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
(Thread Starter)
Thanks ToyotaTech. I did clear the code and two days (100+ miles of driving) later it hasn't come back on yet. Let's hope it doesn't, otherwise it can get expensive.

On a side note, we actually got better than normal gas mileage on the last tank

2003 Tundra V8 4x4 Access Cab TRD Offroad Edition, 157,000km
2004 Mazda RX-8 GT, Fully Loaded with Nav, 101,000km
Silver02TDI is offline  
post #4 of 14 (permalink) Old 08-17-2010, 11:54 AM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 30
Thanks: 2
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
(Thread Starter)
Okay the code decided to come back. I spoke with my new-to-me mechanic (another car is with him right now) and he says that often the O2 sensor behind the cat can throw this code, so it's a good thing to swap first to try and rule out the more expensive cat replacement? What do you guys think?

2003 Tundra V8 4x4 Access Cab TRD Offroad Edition, 157,000km
2004 Mazda RX-8 GT, Fully Loaded with Nav, 101,000km

Last edited by Silver02TDI; 08-17-2010 at 11:56 AM.
Silver02TDI is offline  
post #5 of 14 (permalink) Old 08-17-2010, 11:55 AM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 30
Thanks: 2
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
(Thread Starter)
So bank 1 is the right/passenger side, bank 2 is the left/driver side? Do I have that right or am I mixed up? And then what does sensor 1 and sensor 2 mean? Before (1) and after (2) cat? Sorry for sounding so newb

2003 Tundra V8 4x4 Access Cab TRD Offroad Edition, 157,000km
2004 Mazda RX-8 GT, Fully Loaded with Nav, 101,000km
Silver02TDI is offline  
post #6 of 14 (permalink) Old 08-17-2010, 11:59 AM
Senior Member
 
nastyn8's Avatar
 
Join Date: Apr 2008
Location: Visalia CA
Posts: 2,324
Thanks: 146
Thanked 1,399 Times in 785 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 40 Post(s)
Garage
Someone that has the capacity needs to test the sensors prior to replacement of the cat, otherwise you are wasting money. I would not throw parts at it, the response from the sensors need to be tested after you determine there are no exuast leaks
nastyn8 is offline  
post #7 of 14 (permalink) Old 08-17-2010, 12:00 PM
Senior Member
 
nastyn8's Avatar
 
Join Date: Apr 2008
Location: Visalia CA
Posts: 2,324
Thanks: 146
Thanked 1,399 Times in 785 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 40 Post(s)
Garage
Quote:
Originally Posted by Silver02TDI View Post
So bank 1 is the right/passenger side, bank 2 is the left/driver side? Do I have that right or am I mixed up? And then what does sensor 1 and sensor 2 mean? Before (1) and after (2) cat? Sorry for sounding so newb
Bank 1 is driver side, sensor one is before the cat sensor 2 is after
nastyn8 is offline  
The Following User Says Thank You to nastyn8 For This Useful Post:
Silver02TDI (08-17-2010)
post #8 of 14 (permalink) Old 08-17-2010, 12:07 PM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 30
Thanks: 2
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
(Thread Starter)
Bad Dad's Tundra: That sounds like a great idea - if they are fully interchangeable? When I check a parts site online, they have different part numbers depending on whether they are bank 1 or bank 2 sensor 2s (practicing my newly learned O2 terminology )

2003 Tundra V8 4x4 Access Cab TRD Offroad Edition, 157,000km
2004 Mazda RX-8 GT, Fully Loaded with Nav, 101,000km
Silver02TDI is offline  
post #9 of 14 (permalink) Old 08-17-2010, 12:13 PM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 30
Thanks: 2
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
(Thread Starter)
Quote:
Originally Posted by nastyn8 View Post
the response from the sensors need to be tested after you determine there are no exuast leaks
These exhaust leaks would be determined how? Just a visual inspection/sniff of the tailpipe?

2003 Tundra V8 4x4 Access Cab TRD Offroad Edition, 157,000km
2004 Mazda RX-8 GT, Fully Loaded with Nav, 101,000km
Silver02TDI is offline  
post #10 of 14 (permalink) Old 08-17-2010, 12:21 PM
Senior Member
 
nastyn8's Avatar
 
Join Date: Apr 2008
Location: Visalia CA
Posts: 2,324
Thanks: 146
Thanked 1,399 Times in 785 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 40 Post(s)
Garage
Quote:
Originally Posted by Silver02TDI View Post
These exhaust leaks would be determined how? Just a visual inspection/sniff of the tailpipe?
Do you hear any leaks? in order to affect the sensor you are getting a code on the leak would need to be between the sensors. Basically what your truck is telling you is that there is a discrepency between the readings from sensor 1 to sensor 2, either sensor 2 is not reading corectly or the cat is not filtering
nastyn8 is offline  
post #11 of 14 (permalink) Old 08-17-2010, 01:22 PM
Senior Member
 
toyodatech79's Avatar
 
Join Date: May 2010
Location: Surprise, Az
Posts: 368
Thanks: 21
Thanked 83 Times in 58 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The A/F (air fuel) sensor is the sensor closest to the exhaust manifold, the o2 (oxygen) sensor is the one further back, or downstream. They are not interchangeable. A/F and O2 are baisically the same damn thing, Toyota just calls them different. As far as i know, and I have been know to be wrong, Bank 1 is passenger side and bank 2 is drivers side. Again i could be wrong but that is what I am told!

Codes p0420 is code for Bank #1
Codes p0430 is code for Bank #2

2010 DC 5.7L 4x2

Current mods:
TRD Supercharger
Rev-Tech 3" lift
Fuel Octane 20x9 wheels
Nitto Terra Grappler 305/55/20
5% all windows 35% windshield
Sequoia front door handles
Color matched grille, no more chrome
DDM Tuning 55w 6000k low beams
DDM Tuning 35w 6000k fog lights

Future mods:
BHLM
Exhaust
Interior (leather seats and suede headliner)
Stereo
Front and rear strobe light kit
toyodatech79 is offline  
post #12 of 14 (permalink) Old 08-17-2010, 01:40 PM
Senior Member
 
nastyn8's Avatar
 
Join Date: Apr 2008
Location: Visalia CA
Posts: 2,324
Thanks: 146
Thanked 1,399 Times in 785 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 40 Post(s)
Garage
Quote:
Originally Posted by Bad Dad's Tundra View Post
(high flow cat, usually cheaper than factory cats)
And sometimes A/M Cats code up right away because they are not as efficient as factory pieces
nastyn8 is offline  
post #13 of 14 (permalink) Old 09-24-2010, 02:12 PM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 30
Thanks: 2
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
(Thread Starter)
Sorry to bug you all again, but I have a friend that could hook me up with a good deal on an O2 sensor, so I need to be sure of what I want to get, and I've read conflicting responses...

Codes p0420 is code for Bank #1 = driver/left side
Codes p0430 is code for Bank #2 = passenger/right side?

Sensor 1 = before cat
Sensor 2 = after cat

Gas mileage is the best it's been lately, which is weird.

2003 Tundra V8 4x4 Access Cab TRD Offroad Edition, 157,000km
2004 Mazda RX-8 GT, Fully Loaded with Nav, 101,000km
Silver02TDI is offline  
post #14 of 14 (permalink) Old 03-24-2011, 12:47 PM Thread Starter
Member
 
Join Date: Jan 2009
Posts: 30
Thanks: 2
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Garage
(Thread Starter)
Just a little update. It didn't take long for me to end up getting both codes repeatedly - P0420 and P0430 - so both sides were throwing codes. I replaced the front sensors first (husband insisted it must be fronts, although my money was on rears), and after a few months there was no change and I still got the codes. Then I replaced both rear sensors, and the codes are now gone - Yay! Don't need new cats, which I'm thrilled about. Truck now has 161,000km on it, or 100,000 miles.

2003 Tundra V8 4x4 Access Cab TRD Offroad Edition, 157,000km
2004 Mazda RX-8 GT, Fully Loaded with Nav, 101,000km
Silver02TDI is offline  
Sponsored Links
Advertisement
 
Reply

  TundraTalk.net - Toyota Tundra Discussion Forum > Tundra Discussion > Tundra Problems: Maintenance, Repair & Dealer/Warranty Issues

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TundraTalk.net - Toyota Tundra Discussion Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

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