I have a p0430 code. I need to smog it this month. any way to maybe clean the cat,assuming that's the cause,so that the light stays off for a few driving cycles? Any of those "pour in the tank" concoctions work? This is in Cal.
Need to pass smog Cal '07 Malibu p0430 code
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I might get it up to temp and then do a good Italian tuneup.
Cat codes usually mean a bad cat. You could use a matching sparkplug antifouler for diagostic purposes
. Tthis would go on the down stream 02 sensors past the cats.
The smog inspectors probably know this trick and may spot it if you attempt to leave them on there. But its not that old of a car.
Cat codes usually mean a bad cat. You could use a matching sparkplug antifouler for diagostic purposes
The smog inspectors probably know this trick and may spot it if you attempt to leave them on there. But its not that old of a car.
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I've cleared emmission code by dumping 3 cans of Berrymans chemtool. Unplug your battery to reset the code. If they plug in at this point, the computer will not be in the "ready mode" and you will fail. Each car has a certain mix of different types of driving to make it ready (drive 30mph x certain amount of time, repeat, idle 5 minutes, 5 start and stop cycles, you get the idea). Look your cycle up, each car might be different. When you're done, smog it immediately.
Try a can of GTP from your local AP store.
Get a new cat. And replace the oxygen sensors, too.
I see in another thread you have the 3.5L engine. You should've mentioned it in this thread too
US sellers won't ship non-CARB cats to California, but some Canadian sellers might be willing to do so.
I see in another thread you have the 3.5L engine. You should've mentioned it in this thread too
US sellers won't ship non-CARB cats to California, but some Canadian sellers might be willing to do so.
This is my area of expertise. You'll get that code at just 10% below ideal, so you're not killing trees getting around it. If you throw a gallon of mineral spirits in about a half tank of gas that code will go away after a 2-3 driving cycles.
Originally Posted By: PumpPusher
I've cleared emmission code by dumping 3 cans of Berrymans chemtool. Unplug your battery to reset the code. If they plug in at this point, the computer will not be in the "ready mode" and you will fail. Each car has a certain mix of different types of driving to make it ready (drive 30mph x certain amount of time, repeat, idle 5 minutes, 5 start and stop cycles, you get the idea). Look your cycle up, each car might be different. When you're done, smog it immediately.
Rubbing alcohol is a lot less expensive.
I've cleared emmission code by dumping 3 cans of Berrymans chemtool. Unplug your battery to reset the code. If they plug in at this point, the computer will not be in the "ready mode" and you will fail. Each car has a certain mix of different types of driving to make it ready (drive 30mph x certain amount of time, repeat, idle 5 minutes, 5 start and stop cycles, you get the idea). Look your cycle up, each car might be different. When you're done, smog it immediately.
Rubbing alcohol is a lot less expensive.
Originally Posted By: KingCake
You're asking how to break the law.
It's an easy fix. Buy new carb compliant cats and quit ruining the air quality.
You must have a very fruitful and lovely life.
You're asking how to break the law.
It's an easy fix. Buy new carb compliant cats and quit ruining the air quality.
You must have a very fruitful and lovely life.
I would replace the O2 sensor, before the cat. I bet the cat is fine and the sensor is done.
Listen to Gasbuggy, he knows what he is talking about. Other guys are blowing smoke and do not understand how and when computer declares P0430 code. There are enough peer reviewed scientific articles available on internet if you want to overcome your ignorance. Study failure modes of typical O2 sensor and O2 storing capacity of catalytic converter and understand the algorithm and FTP associated with P0420/P0430. Trust me, it is lot simpler just to listen to Gasbuggy.
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Originally Posted By: Vikas
Listen to Gasbuggy, he knows what he is talking about. Other guys are blowing smoke and do not understand how and when computer declares P0430 code. There are enough peer reviewed scientific articles available on internet if you want to overcome your ignorance. Study failure modes of typical O2 sensor and O2 storing capacity of catalytic converter and understand the algorithm and FTP associated with P0420/P0430. Trust me, it is lot simpler just to listen to Gasbuggy.
All I know is I had a P0420 code, hooked up a OBDII reader and my O2 waveforms were not as they should be. Changed out the O2 sensors for $50 each and the O2 sensor waveforms returned to normal and my CEL went away. Why would change out the most expensive part first?
Listen to Gasbuggy, he knows what he is talking about. Other guys are blowing smoke and do not understand how and when computer declares P0430 code. There are enough peer reviewed scientific articles available on internet if you want to overcome your ignorance. Study failure modes of typical O2 sensor and O2 storing capacity of catalytic converter and understand the algorithm and FTP associated with P0420/P0430. Trust me, it is lot simpler just to listen to Gasbuggy.
All I know is I had a P0420 code, hooked up a OBDII reader and my O2 waveforms were not as they should be. Changed out the O2 sensors for $50 each and the O2 sensor waveforms returned to normal and my CEL went away. Why would change out the most expensive part first?
Originally Posted By: Leo99
Originally Posted By: Vikas
Listen to Gasbuggy, he knows what he is talking about. Other guys are blowing smoke and do not understand how and when computer declares P0430 code. There are enough peer reviewed scientific articles available on internet if you want to overcome your ignorance. Study failure modes of typical O2 sensor and O2 storing capacity of catalytic converter and understand the algorithm and FTP associated with P0420/P0430. Trust me, it is lot simpler just to listen to Gasbuggy.
All I know is I had a P0420 code, hooked up a OBDII reader and my O2 waveforms were not as they should be. Changed out the O2 sensors for $50 each and the O2 sensor waveforms returned to normal and my CEL went away. Why would change out the most expensive part first?
If the oxygen sensors were no good, they'd have their own codes too. P0136 or whatever. But a P0420/30 with no oxygen sensor codes almost always indicates a bad cat.
Originally Posted By: Vikas
Listen to Gasbuggy, he knows what he is talking about. Other guys are blowing smoke and do not understand how and when computer declares P0430 code. There are enough peer reviewed scientific articles available on internet if you want to overcome your ignorance. Study failure modes of typical O2 sensor and O2 storing capacity of catalytic converter and understand the algorithm and FTP associated with P0420/P0430. Trust me, it is lot simpler just to listen to Gasbuggy.
All I know is I had a P0420 code, hooked up a OBDII reader and my O2 waveforms were not as they should be. Changed out the O2 sensors for $50 each and the O2 sensor waveforms returned to normal and my CEL went away. Why would change out the most expensive part first?
If the oxygen sensors were no good, they'd have their own codes too. P0136 or whatever. But a P0420/30 with no oxygen sensor codes almost always indicates a bad cat.
Originally Posted By: slacktide_bitog
Originally Posted By: Leo99
Originally Posted By: Vikas
Listen to Gasbuggy, he knows what he is talking about. Other guys are blowing smoke and do not understand how and when computer declares P0430 code. There are enough peer reviewed scientific articles available on internet if you want to overcome your ignorance. Study failure modes of typical O2 sensor and O2 storing capacity of catalytic converter and understand the algorithm and FTP associated with P0420/P0430. Trust me, it is lot simpler just to listen to Gasbuggy.
All I know is I had a P0420 code, hooked up a OBDII reader and my O2 waveforms were not as they should be. Changed out the O2 sensors for $50 each and the O2 sensor waveforms returned to normal and my CEL went away. Why would change out the most expensive part first?
If the oxygen sensors were no good, they'd have their own codes too. P0136 or whatever. But a P0420/30 with no oxygen sensor codes almost always indicates a bad cat.
Not entirely true. Had the same code on my Mustang and replacing the O2 cleared it. The worst part I passed smog well below the threshold but could not pass smog because of the CEL.
Originally Posted By: Leo99
Originally Posted By: Vikas
Listen to Gasbuggy, he knows what he is talking about. Other guys are blowing smoke and do not understand how and when computer declares P0430 code. There are enough peer reviewed scientific articles available on internet if you want to overcome your ignorance. Study failure modes of typical O2 sensor and O2 storing capacity of catalytic converter and understand the algorithm and FTP associated with P0420/P0430. Trust me, it is lot simpler just to listen to Gasbuggy.
All I know is I had a P0420 code, hooked up a OBDII reader and my O2 waveforms were not as they should be. Changed out the O2 sensors for $50 each and the O2 sensor waveforms returned to normal and my CEL went away. Why would change out the most expensive part first?
If the oxygen sensors were no good, they'd have their own codes too. P0136 or whatever. But a P0420/30 with no oxygen sensor codes almost always indicates a bad cat.
Not entirely true. Had the same code on my Mustang and replacing the O2 cleared it. The worst part I passed smog well below the threshold but could not pass smog because of the CEL.
A typical failure mode of an O2 sensor is to become lazy. I do not understand how a failed O2 sensor can end up becoming over active. I am willing to concede that point if somebody can provide scientific explanation.
OF COURSE WE ARE TALKING ABOUT POST CAT O2 SENSOR HERE. If you are fixing P0420 by changing the PRE CAT sensor, then yes, it is possible to fix the P0420 code that way. In this case PRE CAT has gone lazy but has not yet thrown the O2 code.
OF COURSE WE ARE TALKING ABOUT POST CAT O2 SENSOR HERE. If you are fixing P0420 by changing the PRE CAT sensor, then yes, it is possible to fix the P0420 code that way. In this case PRE CAT has gone lazy but has not yet thrown the O2 code.
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