P0303
P0303 — Cylinder 3 Misfire
1
Driver reports
1
Solved cases
1
Verified fixes
0
Wrong repairs reported
📊 Diagnostic Overview
Severity, cost and difficulty for P0303, based on data already on this page.
Severity
🟠 High
Diagnostic Difficulty
Not enough data yet
System
Engine
Common Causes (based on confirmed repairs)
- Swapped coil pack cylinder 3 to cylinder 1. Code moved to P0301. Bad coil confirmed. Replaced all 4 coil packs $140. No misfires since. 1 vehicle
📐 Diagnostic Difficulty reflects how many different repairs drivers have tried for P0303 and how often those attempts turned out to be the wrong fix — it is calculated from MyCarFault's own reports, not an official manufacturer rating.
⭐ MOST VERIFIED FIX FOR P0303
Swapped coil pack cylinder 3 to cylinder 1. Code moved to P0301. Bad coil confirmed. Replaced all 4 coil packs $140. No misfires since.
Reported in 1 approved case
·
⚪ Unverified
Top Reported Fixes for P0303
Ranked by confidence score — same vehicle matches weighted higher.
Driver Reports — P0303 1 report
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