p0300
Moderate
Volvo · Sedans & Wagons
Random Misfire
Quick Answer
Error code P0300 on your Volvo Sedans & Wagons means: Random Misfire. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Retrieve and record misfire codes
2
Inspect and replace spark plugs if needed
3
Test ignition coils with multimeter
4
Check fuel pressure at rail
5
Verify proper valve timing
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
Ignition coils
Fuel filter
Fuel injector cleaner
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