Possible Causes

Possible causes are:

• Air inlet plugged (DTCs P0505 or P1507).
• Air inlet leakage (DTC P1507).
• Damaged IAC solenoid (DTCs P1504 or P1507).
• Damaged throttle body (DTCs P0505 or P1507).
• Damaged PCM (DTCs P0505, P1504 or P1507).
• IAC circuit open (DTCs P0505, P1504 or P1507).
• IAC circuit shorted to PWR (DTCs P0505, P1504 or P1507).
• IAC circuit shorted to GND (DTC P1504).
• VPWR circuit open (DTCs P0505, P1504 or P1507).
• VPWR to IAC solenoid open (DTCs P0505, P1504 or P1507).