DTC DETECTION LOGIC

DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0411
Secondary air injection system incorrect flow detected
Though the secondary air injection system is operating, the signal voltage from the secondary air injection system mass air flow sensor to the ECM is too low or high.
  • Harness or connectors
    (Air pump circuit is open or shorted)
    (Air pump relay circuit is open or shorted)
    (Air cut solenoid valve circuit is open or shorted)
    (Air cut solenoid valve relay circuit is open or shorted)
  • Air cut solenoid valve
  • Air cut solenoid valve relay
  • Air pump assembly
  • Air pump relay
  • Disconnection, clogging, collapsing and damage of hose or piping

 
 DTC CONFIRMATION PROCEDURE

 
 1.PRECONDITIONING
 
 2.PERFORM DTC CONFIRMATION PROCEDURE