p0300
Moderate
RAM · Trucks
Random Misfire
Quick Answer
Error code P0300 on your RAM Trucks means: Random Misfire. This is usually fixable — see the step-by-step guide below.
Affected Models
Likely Causes
How to Fix It
1
Connect diagnostic scanner to read freeze frame data
2
Inspect and replace spark plugs with correct gap
3
Test ignition coil resistance with ohmmeter
4
Check for vacuum leaks using smoke tester
5
Perform compression test on all cylinders
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Spark plugs set
Ignition coil pack
Vacuum hoses
Compression test kit
Related Error Codes