My engine light came on and I brought it to a mechanic.
They did their diagnostic test and the code was either 412 or 421 (?). Said one showed a problem with the oxygen sensor and the other one was the catalytic converter and he said there is a huge difference in price. How can I know if he tells me it is the catalytic converter it really is?
They did their diagnostic test and the code was either 412 or 421 (?). Said one showed a problem with the oxygen sensor and the other one was the catalytic converter and he said there is a huge difference in price. How can I know if he tells me it is the catalytic converter it really is?
Aug 7, 2007 at 10:34 AM