DTC P0093 can be detected if the problem occurs when the engine idles for 1 minute and then it runs at 2,500 rpm for 30 seconds. If DTC P1229 is set, P0093 (fuel leaks in high-pressure areas) may be set simultaneously. This may be due to the extremely high internal fuel pressure in the common rail causing the pressure limiter to open. The ECM may interpret this as a fault and set P0093

DTC P0088 Fuel Rail / System Pressure - Too High DTC P1229 Fuel Pump System

DTC    P0087    Fuel Rail / System Pressure - Too Low DTC    P0190    Fuel Rail Pressure Sensor Circuit DTC    P0192    Fuel Rail Pressure Sensor Circuit Low Input DTC    P0193    Fuel Rail Pressure Sensor Circuit High Input

To detect atmospheric pressure, the atmospheric pressure sensor built into the ECM is used in the common rail system. Following the changes in the atmospheric pressure, the ECM corrects the fuel injection volume, timing and duration, and adjusts the common rail internal fuel pressure for optimizing combustion.

DTC P0045 Turbocharger / Supercharger Boost Control Solenoid Circuit / Open

DTC    P0031    Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1) DTC    P0032    Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)

HINT: Parameters listed in the chart may be different from your readings depending on the type of instruments and other factors. If any DTCs are displayed during a check mode, check the circuit for the DTCs listed in the chart below. For details of each DTC, refer to the page indicated.

HINT: Using the intelligent tester's Data List allows switch, sensor, actuator, and other item values to be read without removing any parts. Reading the Data List early in troubleshooting is one way to save time.

FAIL-SAFE CHART If any of the following DTCs are set, the ECM enters fail-safe mode to allow the vehicle to be driven temporarily.

When troubleshooting Europe On-Board Diagnostic (Euro-OBD) vehicles, the vehicle must be connected to an OBD scan tool (complying with ISO 15765-4). Various data output from the vehicle's ECM can then be read. Euro-OBD regulations require that the vehicle's on-board computer illuminate the Malfunction Indicator Lamp (MIL) on the instrument panel when the computer detects a malfunction in: