Ford Focus Engine Light P0300 Random Misfire Multiple
Ford
Focus
2011
1.6 Ti-VCT/2.0 Duratec
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Indirect risk — worth monitoring, not urgent
Urgency Level
🟡 Monitor Closely
P0300 random/multiple cylinder misfire on Focus: check all four spark plugs first (cheapest fix). If plugs are good, check coil packs and injector balance. Low fuel pressure can cause P0300 across all cylinders — check fuel pressure before condemning coils.
Onarım / Çözüm
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⚠️ Yanlış Teşhis mi?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Ford Focus 2011 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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