trouble code p0430. How do I fix this problem?

Question

My check engine light came on on my 1997 ford taurus. I hooked up a scan tool and came up with trouble code p0430. I need to know how to fix the problem.

Answer 1

Causes:
A code P0430 may mean that one or more of the following has happened:

The catalytic converter is no longer functioning properly
An oxygen sensor is not reading (functioning) properly
There is an exhaust leak

Possible Solutions:
The simplest thing to do is to reset the code and see if it comes back.

Then inspect for exhaust leaks.

Next step is to measure the voltage at the oxygen sensor on Bank 2 (the passenger side rear sensor, or the sensor after the converter). The voltage should be low and steady (~200mV, depends on the vehicle). If the voltage varies (e.g. 100mV to 600mV) then it's time to replace the catalytic converter. In fact, it would be a good idea to test each oxygen O2 sensor while you're at it.

One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it's out of it's bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It's worth checking into.

Answer 2

Quote:
"I have been running for some time with a P0430 code (Bank 2 catalyst efficiency below threshold), with no apparent degradation of engine performance. It passed an emission test one week before this code showed up. I've been reluctant to fix this problem, since it is very likely a high-priced catalytic converter replacement costing more than $1000. "

Google groups search, it does a body good. :-D

Answer 3

Po430 Ford

Answer 4

I know Ford had a PCM reflash on some vehicles for that code... might want to call and check on that.