Dodge P1643: Supercharger Bypass Valve Actuator Control System - Stuck Closed
Is your scanner showing Dodge P1643?
No worries. We'll show you what it means and how to deal with it.
Dodge P1643: Supercharger Bypass Valve Actuator Control System - Stuck Closed
OVERVIEWWhat Does The Dodge P1643 Code Mean?
The Supercharger boost pressure is managed by the use of a Supercharger Bypass (SCB) Valve. The PCM can vary the position of the SCB Valve to control the amount of boost. The SCB system uses two Position Sensors to monitor the SCB blade position. Position Sensors are located within the SCB Valve assembly.
Each sensor has its own Signal circuit. Both sensors share a 5-Volt reference circuit (Supply) and a low reference circuit (Sensor Return). The Powertrain Control Module (PCM) monitors the SCB Valve Sensor data. Each Signal circuit provides the PCM with a signal voltage proportional to SCB blade movement. The PCM monitors the data to verify that the indicated SCB position is correct.
What Are The Potential Causes Of The Dodge P1643 Code?
- COKING OR BLOCKAGE OF THE SUPERCHARGER BYPASS VALVE PLATE
- SUPERCHARGER BYPASS VALVE
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> INNOVA 5210
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Dodge P1643, DTCDECODE.
