Diagnostic Trouble Codes
Look up OBD-II DTC codes for 5,383 vehicle configurations.
Browse by Make
Acura
50 vehicles · 980 codes
Alfa Romeo
5 vehicles · 938 codes
Aston Martin
8 vehicles · 894 codes
Audi
208 vehicles · 958 codes
BMW
194 vehicles · 928 codes
Bentley
6 vehicles · 894 codes
Buick
52 vehicles · 1013 codes
Cadillac
74 vehicles · 1007 codes
Chevrolet
264 vehicles · 1051 codes
Chrysler
84 vehicles · 968 codes
Daewoo
8 vehicles · 836 codes
Dodge
191 vehicles · 1002 codes
Eagle
7 vehicles · 615 codes
Ferrari
35 vehicles · 938 codes
Fiat
51 vehicles · 972 codes
Ford
238 vehicles · 1048 codes
GMC
89 vehicles · 1007 codes
Genesis
9 vehicles · 923 codes
Geo
5 vehicles · 608 codes
Honda
113 vehicles · 980 codes
Hummer
6 vehicles · 954 codes
Hyundai
159 vehicles · 1001 codes
Infiniti
58 vehicles · 971 codes
Isuzu
11 vehicles · 836 codes
Jaguar
17 vehicles · 894 codes
Jeep
80 vehicles · 1002 codes
Kia
158 vehicles · 1001 codes
Lamborghini
6 vehicles · 894 codes
Land Rover
19 vehicles · 938 codes
Lexus
90 vehicles · 984 codes
Lincoln
85 vehicles · 1013 codes
Lotus
7 vehicles · 894 codes
Lucid
6 vehicles · 557 codes
Maserati
5 vehicles · 894 codes
Mazda
116 vehicles · 997 codes
McLaren
11 vehicles · 938 codes
Mercedes-Benz
361 vehicles · 999 codes
Mercury
15 vehicles · 939 codes
Mini
9 vehicles · 928 codes
Mitsubishi
68 vehicles · 972 codes
Nissan
160 vehicles · 1005 codes
Oldsmobile
15 vehicles · 779 codes
Plymouth
8 vehicles · 672 codes
Polestar
8 vehicles · 557 codes
Pontiac
60 vehicles · 941 codes
Porsche
114 vehicles · 968 codes
Ram
16 vehicles · 958 codes
Rivian
8 vehicles · 557 codes
Rolls-Royce
11 vehicles · 894 codes
Saab
11 vehicles · 864 codes
Saturn
18 vehicles · 941 codes
Scion
6 vehicles · 929 codes
Subaru
113 vehicles · 963 codes
Suzuki
34 vehicles · 938 codes
Tesla
32 vehicles · 557 codes
Toyota
226 vehicles · 1018 codes
Volkswagen
159 vehicles · 1002 codes
Volvo
98 vehicles · 956 codes
Understanding OBD-II Diagnostic Trouble Codes
What Are DTC Codes?
Diagnostic Trouble Codes (DTCs) are standardized codes generated by a vehicle's onboard diagnostics system (OBD-II) when it detects a malfunction. When your check engine light comes on, a scanner can read these codes to identify the problem. Generic codes (starting with P0, B0, C0, U0) are universal across all manufacturers, while manufacturer-specific codes vary by make.
Code Categories
- P (Powertrain): Engine, transmission, emissions. The most common codes.
- B (Body): Airbags, seatbelts, lighting, climate control, door locks.
- C (Chassis): ABS, stability control, steering, brake systems.
- U (Network): CAN bus communication between vehicle modules.
Reading a DTC Code
- First letter: P/B/C/U = system category.
- Second digit: 0 = generic (SAE), 1 = manufacturer-specific.
- Third digit: Subsystem (fuel, ignition, emissions, etc.).
- Last two digits: Specific fault within that subsystem.
Vehicle-Specific Code Filtering
Our database filters DTC codes by fuel type, so electric vehicles won't show spark plug or misfire codes, and gasoline engines won't show glow plug codes. Select your exact vehicle to see only the codes that apply to your powertrain.
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