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3.Location of the Data Link Connector (DLC)
The DLC (Data Link Connector or Diagnostic Link Connector) is the
standardized 16-cavity connector where diagnostic code readers
interface with the vehicle's on-board computer. The DLC is usually
located like below:
within a vehicle. OBDII Diagnostic Trouble Codes consist of a five-digit
alphanumeric code. The first character, a letter, identifies which control
system sets the code. The other four characters, all numbers, provide
additional information on where the DTC originated and the operating
conditions that caused it to set. Here below is an example to illustrate the
structure of the digits:
P0202
DTC
Example
B
=Body
C
=Chassis
P
=Powertrain
U
=Network
Systems
Malfunctioning
Section of the Systems
Iden tifying specific
Generic(SAE):
P0, P2, P34-P39
B0, B3
C0, C3
U0, U3
CODE TYPE
Sub-s ystems
A
B
C
D
