Possible Cause

NOTE:  The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.

DTC: P0642 

• Crankshaft position (CKP) sensor VCC line short to ground
• Manifold absolute pressure (MAP) sensor VCC line short to ground
• Fuel rail pressure sensor VCC line short to ground
• Engine oil pressure sensor VCC line short to ground
• Turbocharger wastegate control actuator position sensor VCC line short to ground
• Throttle body VCC line short to ground
• Accelerator pedal position (APP) sensor VCC line short to ground

DTC: P0643 

• CKP sensor VCC line short to power
• MAP sensor VCC line short to power
• Fuel rail pressure sensor VCC line short to power
• Engine oil pressure sensor VCC line short to power
• Turbocharger wastegate control actuator position sensor VCC line short to power
• Throttle body VCC line short to power
• APP sensor VCC line short to power

Common 

• PCM internal circuit failure