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202 lexus ls430 with p0420 and p0430 codes itermitantly a bad sensor?

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202 lexus ls430 with p0420 and p0430 codes itermitantly a bad sensor?
Submitted: 8 years ago.Category: Lexus
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Answered in 3 minutes by:
12/4/2009
Lexus Mechanic: Skyvisions, ASE Certified Technician replied 8 years ago
Skyvisions
Skyvisions, ASE Certified Technician
Category: Lexus
Satisfied Customers: 14,541
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Unfortunately you're not going to find this to be a sensor problem. Don't let anybody talk you into replacing the oxygen or AFR sensors they are not bad they are in fact doing their job. These codes can only be set once the catalytic converter is not doing its job efficiently. Unfortunately this is a very expensive repair to put factor catalytic converters on this vehicle. You could use aftermarket parts but they do not last. They are cheap for a reason. These codes and the fact that the converters are not working efficiently will not have any adverse effect on the performance of the vehicle. It will possibly bring your fuel mileage down slightly. If you had to have an emissions test in the state where you live you will need to have these repaired.

 

Skyvisions

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Customer reply replied 8 years ago
so is there any easy way to confirm the the heath of the o2 sensors or fault of the converter?
Lexus Mechanic: Skyvisions, ASE Certified Technician replied 8 years ago

This confirms that you have a fault in the catalytic converters for Bank 1 and Bank 2. If the sensors were not working you would have fault codes for those sensors and it would be difficult for the computer to set these efficiency codes.

 

Skyvisions

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Customer reply replied 8 years ago
so the bite on these sensors will cacth a drifting sensor?
Lexus Mechanic: Skyvisions, ASE Certified Technician replied 8 years ago

Yes if the sensors are out of range it will set another code for the sensors.

 

Skyvisions

Skyvisions
Skyvisions, ASE Certified Technician
Category: Lexus
Satisfied Customers: 14,541
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Customer reply replied 8 years ago
Thanks i'll live with the light till it effects the milage. i work on aircraft some of the bite checks have a lage tolarance and will pass a drifting sensor even thought the system preformace is not a 100%. the internet blogs keep chasing sensors but i was having a hard time buying it ...2 sensors at the same time.
Customer reply replied 8 years ago
Thanks i'll live with the light till it effects the milage. i work on aircraft some of the bite checks have a lage tolarance and will pass a drifting sensor even thought the system preformace is not a 100%. the internet blogs keep chasing sensors but i was having a hard time buying it ...2 sensors at the same time.

Lexus Mechanic: Skyvisions, ASE Certified Technician replied 8 years ago

You made a wise choice not to buy sensors. Most people think that putting sensors in it will solve this problem but it won't..

 

Skyvisions

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Customer reply replied 8 years ago
Some what opposite on the planes ...system is very reliable but the monitoring systems not so much. 747-400 were known as electronic hypoconderiates
Lexus Mechanic: Skyvisions, ASE Certified Technician replied 8 years ago

I don't think I will be flying any 747 airplanes anytime soon. Thank you for the accept. If you need anything in the future just let me know. Just ask for, skyvisions, in the question and I will get back to you.

 

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