DTC P0243: Turbocharger/Supercharger Wastegate Solenoid A

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.

P0243 - TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID A

Description:	The powertrain control module (PCM) monitors the SCB solenoid circuit for an electrical failure. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified SCB solenoid duty cycle (100% or 0%) by PCM command.
Possible Causes:	VPWR circuit open to SCB solenoid SCB solenoid circuit shorted to PWR GND or CHASSIS GND Damaged SCB solenoid SCB solenoid circuit open SCB solenoid circuit shorted to VPWR
Diagnostic Aids:	With the test lamp connected to the SCB solenoid harness connector, cycle the solenoid on and off using output state control (OSC). If the test lamp cycles on and off the SCB solenoid is a suspect. If the test lamp is always on suspect the SCB solenoid driver circuit for short to ground.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to KJ: Supercharger Bypass Control STEP KJ3.