NOTE: Each of the following numerical codes will
have a one-letter prefix of C, P, or U. A "C" prefix
denotes a chassis malfunction, a "P" prefix
denotes a power train malfunction, and a "U" pre-
fix denotes a loss of communication with the
I looked at the manual for the 2014HDX and did not see a P0019 code. This was on page 152 of the manual
Both codes related to cooling system. Download a free service manual at Country Cat for your HDX. More than likely a bad ECT (engine coolant temperature) sensor. The sensor is located on the cylinder head and is easy to remove/replace.
Sensor, Engine Coolant Temperature
0808-124 lists for 13 dollars and change.
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