P0300 Dodge Charger
Random/Multiple Cylinder Misfire Detected · Powertrain Code · High
What is P0300?
The ECM has detected misfires occurring in multiple or random cylinders. Common causes include worn spark plugs, faulty ignition coils, vacuum leaks, low fuel pressure, or a failing catalytic converter.
When the Dodge Charger triggers code P0300 (random/multiple cylinder misfire detected), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the Dodge Charger.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your Dodge Charger.
Common Causes on Dodge Charger
- MDS lifter failure on 5.7L or 6.4L HEMI causing cylinder deactivation misfire (Charger/Challenger)
- Spark plug electrode erosion on high-performance 6.4L HEMI from aggressive driving
- Ignition coil failure from heat soak in engine bay on 5.7L HEMI
- Exhaust manifold crack or bolt failure causing lean condition and misfire codes
- Cam lobe wear from oil starvation during MDS transitions on 5.7L HEMI
Symptoms
- Rough idle with noticeable engine vibration
- Engine shaking or stumbling under load
- Loss of power during acceleration
- Check engine light flashing intermittently
- Poor fuel economy
- Hesitation or stumble on acceleration
Notes for Dodge Charger
The MDS system is the primary failure point for misfires on 5.7L and 6.4L HEMI engines.