What do codes P0300, P0301, P0303, P0305, P1316, P0420, P0430 mean?
P0300 to p0306 means misfire,p1316 about injectors circuit IDM detected...and p0420 catalyst system bank 1 p0430 catalyst system bank 2...
Its a major vacuum leak leads to misfires and then leads to bad sparks ,bad cat code is only triggered for the misfire. You need a complete tune up , changing sparks,replacing breather hose and valve that connects to the valve cover ,brake booster linkage which connects to air intake manifold, IMT o-rings (2 of them) Good news These parts are generally cheap if buy from online or jag dealer.And parts can be replaced easily , well I did it myself the ngine is better than i got it. Bad News Cat might been damaged( if car is not fixed soon), Also Labor will cost more in workshop than DIY I had the same problem at 90k,Fixed everything myself, now its like new again , Also changed to custom cold air intake now i get 32 mpg on the highway. check my profile for details
What is a custom cold air intake?
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