Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- High
- Can I keep driving?
- No, stop and have it checked
- Estimated cost
- $30 to $700
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
P0302 Cylinder 2 Misfire Detected High
The P0302 code means the computer detected failed combustion events concentrated in cylinder number two. Because the problem is limited to one cylinder, the cause is almost always a part that belongs to that cylinder: its spark plug, its ignition coil, its injector or its compression. A swap test tells you which one without buying anything.