OBD-II Trouble Code Description for P0430 Porsche

Catalyst System Efficiency Below Threshold

What does this mean?

OBD2 Code P0430 Porsche definition:
Basically this means that the oxygen sensor downstream of the catalytic converter on bank 2 is detecting that the converter is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.

Symptoms

Possible sumptoms of OBD code P0430 Porsche
You will likely not notice any drivability problems, although there may be symptoms such as a rough/hard idle when cold.

Causes

Possible causes of OBD code P0430 Porsche
A code P0430 Porsche 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

First, inspect for exhaust leaks. Next step is to measure the voltage at the oxygen sensor on Bank 2. 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.

Related Codes

P0420 Porsche P0421 Porsche P0422 Porsche P0423 Porsche P0424 Porsche P0425 Porsche P0426 Porsche P0427 Porsche P0428 Porsche P0429 Porsche P0431 Porsche P0432 Porsche P0433 Porsche P0434 Porsche P0435 Porsche P0436 Porsche P0437 Porsche P0438 Porsche P0439 Porsche