Onboard Diagnostics
DIAGNOSTIC TROUBLE CODES (DTCs)
Generic DTCs are codes that are used by all vehicle manu- facturers. The standards for generic DTCs, as well as their definitions, are set by the Society of Automotive Engineers (SAE).
The 3rd character is a letter or a numeric digit (0 thru 9, A thru F). It identifies the specific system or
The 4th and 5th characters are letters or numeric digits (0 thru 9, A thru F). They identify the section of the system that is malfunctioning.
OBD2 DTC EXAMPLE
P0201 - Injector Circuit Malfunction, Cylinder 1
B - Body |
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C - Chassis |
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P - Powertrain |
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U - Network |
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0 - Generic
1 - Manufacturer Specific
2- Generic ("P" Codes) and Manufacturer Specific ("B", "C" and "U" Codes)
3- Includes both Generic and Manufacturer Specific Codes
Identifies the system where the problem is located. "P" Code systems are listed below. "B", "C" and "U" Code systems will vary.
0- Fuel and Air Metering; Auxiliary Emission Controls
1- Fuel and Air Metering
2- Fuel and Air Metering (injector circuit malfunction only)
3- Ignition System or Misfire
4- Auxiliary Emission Control System
5- Vehicle Speed Control and Idle Control System
6- Computer Output Circuits
7- Transmission
8- Transmission
9- Transmission
A - Hybrid Propulsion
B - Hybrid Propulsion
C - Hybrid Propulsion
Identifies what section of the system is malfunctioning
14 | Craftsman 14063 |