Diagnostic Aids
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- Excessive vibration from sources other than the engine could cause DTC P0300 to set. The following are possible sources of vibration:
- Variable thickness brake rotors-Refer to Symptoms - Hydraulic Brakes .
- Worn or damaged accessory drive belt-Refer to Symptoms - Engine Mechanical .
- Spray water on the secondary ignition components using a spray bottle. Look and listen for arcing or misfiring.