Innova Can OBD2 Owner's Manual page 18

Onboard Diagnostics
DIAGNOSTIC TROUBLE CODES (DTCs)
The "Malfunction Indicator Lamp" (MIL) is the accepted term
used to describe the lamp on the dashboard that lights to warn
the driver that an emissions-related fault has been found.
Some manufacturers may still call this lamp a "Check Engine"
or "Service Engine Soon" light.
P0201 - Injector Circuit Malfunction, Cylinder 1
B - Body
C - Chassis
P - Powertrain
U - Network
0 - Generic
1 - Manufacturer Specific
2 - Generic
3 - Includes both Generic and Manufacturer
Specific Codes
Identifies the system where the
problem is located:
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
Identifies what section of the system
is malfunctioning
16
OBD2 DTC EXAMPLE
P 0 2 0 1
OBD2