Kzyee KM301 - Diagnostic Trouble Codes (DTCs); Types of DTCs; DTC Structure and Decoding

OBD & Battery Analysis Scanner
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Diagnostic Trouble Code
A five digit alphanumeric identifier for a fault condition identified by the OBD II system.
There are three types of DTCs:
1. Pending - When a fault condition
is identified during a Drive Cycle,
but does not meet enough
criteria to activate the MIL.
If the fault condition occurs during two
consecutive Drive Cycles, it will turn into
a Stored DTC and the MIL will activate.
2. Stored - ADTC is stored when a fault
condition has occurred that meets
enough criteria to activate the MIL.
3. Permanent - A stored DTC that can only
be cleared by the OBD II system, after
repairs are made, and a set number of
Driving Cycles have been completed.
Example: P0212 - Injector Circuit/ Open Cylinder 12
Systems
B - Body
C - Chassis
P - Powertrain
U - Network
Code Types*
0 - Generic
1 - Manufacturer Specific
2 - Generic Powertrain/ManufacturerSpecific
3 - Generic Powertrain/Manufacturer Specific
Sub-Systems
1 - Fuel and Air Metering
2 - Fuel and Air Metering
(injector circuit malfunction only)
3 - Ignition Malfunction or EngineMisfire
4 - Auxiliary EmissionControls
5 - Vehicle Speed or Idle Controls
6 - Computer Output Circuits
7 - TransmissionControls
8 - TransmissionControls
12 - Cylinder 12
P 0 2 1 2
*The Scan Tool supports the following Code Types:
Generic (SAE):
B0, B3
C0, C3
P0, P2, P34-P39
U0, U3
Manufacturer Specific:
B1, B2
C1, C2
P1, P30-P33
U1, U2
Figure 50