Lancer Sportback L4-2.4L (4B12) (2010)
1. Turn the ignition switch to the "ON" position while press the "COAST/SET" switch. Then, within one second, release the "COAST/SET" switch
and press the "ACC/RES" switch.
2. Read a DTC by observing the flash display pattern of the "CRUISE" indicator light in the combination meter.
NOTE: Other on-board diagnostic items are also output as voltage waveforms corresponding to diagnostic trouble code numbers.
Clearing Diagnostic Trouble Codes
HOW TO ERASE DIAGNOSTIC TROUBLE CODES
Disconnect the negative (-) battery cable.
Symptom Chart