A DTC (Diagnostic Trouble Code) P0301 (misfire on cylinder 1) on a waste spark system could be caused by all of these, EXCEPT ________.
A) open spark plug wire on cylinder 4 (companion to cylinder 1)
B) defective crankshaft sensor
C) open plug wire on cylinder 1
D) defective #1 spark plug

Question

Quizplus · Accepted Answer

A misfire on cylinder 1 in a waste spark system could be caused by an open spark plug wire on cylinder 4 (since they share the same coil), an open plug wire on cylinder 1, or a defective #1 spark plug. However, a defective crankshaft sensor would not affect the individual cylinders and is therefore not a likely cause of a misfire on cylinder 1 specifically.

A DTC (Diagnostic Trouble Code) P0301 (Misfire on Cylinder 1)