Washing a catalytic converter with soapy water to correct a P0420 catalyst system efficiency below threshold. Many people on RU-vid show this process but none of them show any real data one way or another to to show it working or not working. We did not have good results with it but we believe the theory behind this fix is sound and that it might work in some instances. If we get a chance we may experiment some more with it.
8 май 2014