Owner s manual, Obd2 car scanner – Roadi RDT51 User Manual
Page 145
OWNER S MANUAL
,
OBD2 Car Scanner
141
CHECK
15.1 Reading Codes
Reading Codes can be done with the key on engine off (KOEO) or
with the key on engine running (KOER).
Stored Codes are also known as "hard codes"”or "permanent codes".
These codes cause the control module to illuminate the malfunction
indicator lamp (MIL) when emission-related fault occurs.
Pending Codes are also referred to as "
maturing codes" or
"
continuous monitor codes". They indicate problems that the control
module has detected during the current or last driving cycle but are not
considered serious yet. Pending Codes will not turn on the malfunction
indicator lamp (MIL). If the fault does not occur within a certain number of
warm-up cycles, the code clears from memory.
Permanent Codes are available for the vehicles which must have CAN
protocol. So for Non-CAN vehicles, only Stored Codes and Pending Codes
are showed in the Read Codes Menu.
Use UP/DOWN scroll button to select a module and press
ENTER
button.
Control Module
====================1/2
Engine
A/T
1).
Use UP/DOWN scroll button to select Read Codes from
Diagnostic Menu and press ENTER button.
Diagnostic Menu
====================1/11
2). Use
UP/DOWN scroll button to select Stored Codes or Pending
Codes from the Trouble Codes menu and press ENTER button.
Read Codes
Erase Codes
Live Data
View Freeze Frame
I/M Readiness
O2 Monitor Test