Diagnostic Test Code (DTC) P0316 means that a cylinder misfire was detected within the first 1000 revolutions of the engine crankshaft after engine startup. This code will always be stored at the same time with freeze frame data and a fault code for the offending cylinder.
This is where DTC P0305 comes in.
This code means that cylinder #5 is the cylinder that is causing the misfire.
Coils and plugs are only two of the many possible reasons for a cylinder misfire.
The possible reasons for both of these codes are:
> Damaged crankshaft position sensor
> Ignition system (Primary or Secondary)
> Faulty fuel injector or fuel injector control circuit
> Poor fuel quality (will usually cause MULTIPLE cylinder misfire codes)
> Base engine faults (burned valves, low compression, damaged lifters or cam, blown head gasket, etc.)
> Damaged/malfunctioning PCM
NOTE: The LEAST LIKELY cause is the PCM. A damaged Crankshaft Position Sensor will usually cause problems on ALL cylinders, not a single cylinder, however it IS possible if the sensing ring is damaged.
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