P004E - Turbocharger/Supercharger Boost Control Solenoid 'A' Circuit Intermittent/Erratic
A boost control solenoid is normally used to operate either a variable geometry turbocharger mechanism or a standard turbocharger wastegate mechanism.
Fault Code Explained
The ECM has detected that the circuit signal is not responding as expected and may be outside of normal operating parameters.
- Check supply Voltage at solenoid
- Check solenoid control circuit