FixVault

DTC P0418: Secondary Air Injection System Control "A" Circuit: Description

Refer to DESCRIPTION .

DTC DETECTION CONDITION TABLE

DTC No. DTC Detection Condition Trouble Area
P0418 Both of the following conditions are met, when idling just after cold start (1 trip detection logic):
  1. Air injection (AIR) system does not operate
  2. Air injection control driver (AID) outputs air pump malfunction signal (20% duty signal)
  • Open in air pump drive circuit
  • Short between air pump circuit and +B circuit
  • Air injection control driver (AID)
  • ECM
P0418 Both of the following conditions are met, when idling just after cold start (1 trip detection logic):
  1. Air injection (AIR) system operates
  2. Air injection control driver (AID) outputs air pump malfunction signal (20% duty signal)
  • Short between air pump circuit and body ground
  • AID
  • ECM