DTC P056E-84: Cold Start Turbocharger/Supercharger Boost Control "A" Performance - Signal below allowable range: Action
- Vehicle Conditions to enable DTC Logging Strategy
- Check turbocharger electronic wastegate for mechanical integrity
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Refer to the appropriate system wiring diagrams and check the turbocharger electronic wastegate circuit for
- Short circuit to ground
- Short circuit to power
- Open circuit
- High resistance
- Check and install a new turbocharger electronic wastegate, only when diagnosed as failed
- Using the Jaguar Land Rover approved diagnostic equipment, clear all stored DTCs and retest