DTC P1527 - Air By-Pass Solenoid, Open Or Short Circuit: Condition

DTC is set when Engine Control Module (ECM) detects open or short circuit in air by-pass solenoid system with ignition switch on. Actual engine speed is excessively higher or lower than target speed for more than 14 seconds. Possible causes are:

• Air by-pass solenoid malfunction.
• Leakage in intake system.
• Open or short circuit between terminal "A" on air by-pass solenoid and main relay.
• Open or short circuit between terminal "B" on air by-pass solenoid valve and terminal 1V on Engine Control Module (ECM).