P0300 on CHRYSLER 300
Random/Multiple Cylinder Misfire Detected
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Chrysler 300 context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0300.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0300 Means on Your CHRYSLER 300
P0300 is a diagnostic trouble code indicating: Random/Multiple Cylinder Misfire Detected. This code relates to the ignition system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real CHRYSLER 300 Owner Reports
Source: NHTSA Complaints Database
"My chrysler 300c hemi started idling rough and showing code p0300. oil/plugs were changed, and my car worked well for ~500 miles. after which the low oil level light chimmed. after taking to the dealer the oil pressure switch was replaced and all was right."
"Check engine light has appeared on an average of 1 time per month since purchase of the vehicle 8/4/07. repeated visits to dealership gegnas chrysler in philadelphia pa has not corrected issue to date."
"Code p0300 random misfire code at mileage 32161 code p0300 random misfire code at mileage 32217 continuous periodic misfirings in engine not resolved code p0300 random misfire code at mileage 66962 code p0300 random misfire code at mileage 70762 code p00132-02 sensor failure at mileage 71146 s"
"Camshaft / lifters are prematurely wearing out( wiped ) the car is throwing a p0300 ,p0303 code but the spark plugs,coils etc are fine .."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on CHRYSLER 300
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.