P0300 on CHRYSLER 300 — Random/Multiple Cylinder Misfire Detected

Q: "What does P0300 mean on a CHRYSLER 300?"

"P0300 indicates: Random/Multiple Cylinder Misfire Detected. This is a ignition system code. 4 CHRYSLER 300 owners have reported this to NHTSA."

Q: "What are the most common causes of P0300 on CHRYSLER 300?"

"Based on 4 NHTSA reports, the most commonly cited components are: Engine And Engine Cooling, Fuel System, Gasoline,Vehicle Speed Control,Engine, Unknown Or Other,Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0300 serious on my CHRYSLER 300?"

"Of 4 NHTSA reports for this code on CHRYSLER 300, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my CHRYSLER 300 shows P0300?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

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 system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

4 CHRYSLER 300 owners have reported this issue to NHTSA across model years 2006-2011. Most reports come from the 2006, 2011 model years. The most commonly reported component is Engine And Engine Cooling (50.0% of reports).

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."

— 2006 CHRYSLER 300 owner · FUEL SYSTEM, GASOLINE,VEHICLE SPEED CONTROL,ENGINE · Filed 03/20/2014

"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."

— 2006 CHRYSLER 300 owner · ENGINE AND ENGINE COOLING · Filed 03/30/2009

"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"

— 2006 CHRYSLER 300 owner · ENGINE AND ENGINE COOLING · Filed 01/20/2009

"Camshaft / lifters are prematurely wearing out( wiped ) the car is throwing a p0300 ,p0303 code but the spark plugs,coils etc are fine .."

— 2011 CHRYSLER 300 owner · UNKNOWN OR OTHER,ENGINE · Filed 09/02/2019

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

3

'06

1

'11

Common Causes on CHRYSLER 300

Based on NHTSA complaint component analysis for this vehicle.

ENGINE and ENGINE COOLING 50%

FUEL SYSTEM, GASOLINE,VEHICLE SPEED CONTROL,ENGINE 25%

UNKNOWN or OTHER,ENGINE 25%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0300 mean on a CHRYSLER 300? ▾

P0300 indicates: Random/Multiple Cylinder Misfire Detected. This is a ignition system code. 4 CHRYSLER 300 owners have reported this to NHTSA.

What are the most common causes of P0300 on CHRYSLER 300? ▾

Based on 4 NHTSA reports, the most commonly cited components are: Engine And Engine Cooling, Fuel System, Gasoline,Vehicle Speed Control,Engine, Unknown Or Other,Engine. These percentages are based on the component field in owner complaints.

Is P0300 serious on my CHRYSLER 300? ▾

Of 4 NHTSA reports for this code on CHRYSLER 300, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my CHRYSLER 300 shows P0300? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.