The OBD-II P0300 code indicates that your engine has experienced multiple random misfires. If this is indeed the case, you’ve probably already noticed some changes in your car’s performance, as well as some rough engine operation, both while driving and while idle.But other than the ...
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The P0300 codes are all cylinder misfire codes, with the last digit denoting the number of the misfiring cylinder, so the 2013-2017 Honda Accord 2.4L LX or EX dash code P0301, P0302, or P0303 indicates that cylinder number one, two, or three is misfiring for any of a variety of rea...
What Are The Causes of P0405? Most often, the problem is related directly to the EGR valve. It could be faulty or there might be a bad connection. Here are the most probable causes to consider, but this list is not a replacement for a proper diagnosis. ...
Ignition misfire (a fouled spark plug, weak ignition coil or bad plug wire that causes a misfire allows unburned oxygen to pass into the exhaust and fool the O2 sensors)Compression leaks (bad exhaust valve that allows unburned oxygen into exhaust and fools O2 sensors)...