Full Product Manual

28
Read Codes
 The Read Codes function can be performed with the key on, engine off
(KOEO) or with the key on, engine running (KOER).
 Stored Codes are also known as “hard codes”, which are fault codes,
or trouble codes that have been stored in the vehicle computer memory
because the faults have reoccurred for more than a specified amount
of key-cycles. These codes will cause the control module to illuminate
the malfunction indicator light (MIL) when emission-related faults
occur.
 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 as yet
considered serious. Pending Codes will not cause a malfunction
indicator light (MIL). If the fault does not occur within a certain number
of warm-up cycles, the code clears from memory.
 Permanent Codes are DTCs that are "confirmed" and are retained in
the non-volatile memory of the vehicle’s computer until the appropriate
monitor for each DTC has determined that the malfunction is no longer
present and is not causing the MIL. Permanent DTCs are stored in
non-volatile memory and can not be erased by any diagnostics service
or by disconnecting power to ECU.
1) Use UP/DOWN scroll button to select Read Codes from Diagnostic
Menu and press OK button.
Figure 4-4
2) Use the UP/DOWN scroll button to select Stored Codes or Pending
Codes from the Read Codes menu and press the OK button.