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Browse by System

OBD2 Code Categories

Browse 322+ diagnostic trouble codes organized by vehicle system

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Engine
🔴 29 Critical🟡 Moderate🟢 8 Minor
71 codes · 55 DIYBrowse →
⚙️
Transmission
🔴 17 Critical🟡 Moderate🟢 2 Minor
45 codes · 6 DIYBrowse →
⛽
Fuel System
🔴 23 Critical🟡 Moderate🟢 1 Minor
36 codes · 19 DIYBrowse →
💨
Emissions
🔴 0 Critical🟡 Moderate🟢 41 Minor
63 codes · 58 DIYBrowse →
🔑
Ignition
🔴 16 Critical🟡 Moderate🟢 0 Minor
19 codes · 16 DIYBrowse →
🛑
ABS / Brakes
🔴 8 Critical🟡 Moderate🟢 1 Minor
19 codes · 12 DIYBrowse →
💺💥
Airbag / SRS
🔴 13 Critical🟡 Moderate🟢 0 Minor
13 codes · 0 DIYBrowse →
❄️
HVAC
🔴 0 Critical🟡 Moderate🟢 3 Minor
5 codes · 3 DIYBrowse →
⚡
Electrical
🔴 9 Critical🟡 Moderate🟢 7 Minor
24 codes · 12 DIYBrowse →
📡
Network / CAN
🔴 5 Critical🟡 Moderate🟢 0 Minor
7 codes · 0 DIYBrowse →
📡
Sensors
🔴 4 Critical🟡 Moderate🟢 5 Minor
18 codes · 14 DIYBrowse →
💭
Exhaust
🔴 0 Critical🟡 Moderate🟢 0 Minor
2 codes · 0 DIYBrowse →
🚗
Suspension
🔴 0 Critical🟡 0 Moderate🟢 0 Minor
0 codes · 0 DIYBrowse →