DTC P0048 Turbocharger Control Circuit High (4JJ3 with DPD)

1. DTC P0048 description

The turbocharger internal control unit controls the VGS actuator by the signal sent from the ECM via the CAN communication circuit, and it performs the opening and closing operation of the nozzle vane. Turbocharger internal control unit monitors the operation of the turbocharger. If the turbocharger internal control unit detects a turbocharger malfunction, it sends the information to the ECM. If the ECM detects an abnormal signal from the turbocharger internal control unit, the DTC is set.

2. Condition for setting DTC P0048

Condition for running the DTC

The ignition switch is ON.
The battery voltage is 10 to 16 V.
DTCs U0074 and U0110 are not set.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC U0074 Control Module Communication Bus Off - Local CAN".

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC U0110 Lost Communication with VNT System".

Condition for setting the DTC

The ECM detects that there is a short circuit in the turbocharger internal control circuit.

3. Action taken when DTC P0048 sets

The ECM illuminates the MIL. Refer to Action taken when DTC sets - Type A.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".

The ECM limits the fuel injection quantity.
The ECM inhibits the EGR control.
The ECM inhibits the turbocharger control.
The ECM inhibits the cruise control.

4. Condition for clearing DTC P0048

Refer to Conditions for clearing the MIL/DTC - Type A or Type B.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".