Supply pressure sensor
Error identification: The voltage in the circuit has been below the permitted level.
Cause: Short circuit in the sensor circuit.
The fault may also be caused by a fault on the voltage supply to those components which share their voltage supply. If a fault is indicated on the oil pressure sensor at the same time, there is probably a fault on the shared internal voltage supply.
Notes: There is a common voltage supply for the fuel supply pressure sensor, coolant temperature sensor, charge air pressure sensor, charge air temperature sensor and fan speed sensor. If a fault occurs in one of the sensors, the other sensor circuits may be affected.
If the voltage is outside the permitted range, the control unit uses a pre-programmed value.
An active fault code limits the maximum engine torque by approximately 30%.
Action: Check the fuel supply pressure sensor, coolant temperature sensor, charge air pressure sensor, charge air temperature sensor and fan speed sensor, along with the harness-to-harness connectors and electrical cables in the circuits.
Supply pressure sensor
Error identification: The voltage in the circuit has been below the permitted level.
Cause: Possible causes:
• Short circuit in the sensor circuit.
• The fault may also be caused by a fault on the voltage supply to those components which share their voltage supply. If a fault is indicated on the oil pressure sensor at the same time, there is probably a fault on the shared internal voltage supply.
• Fault in the circuit of the charge air pressure sensor, charge air temperature sensor, coolant temperature sensor or fan speed sensor.
Notes: There is a common voltage supply for the coolant temperature sensor, charge air pressure sensor, charge air temperature sensor, fuel supply pressure sensor and fan speed sensor. If a fault occurs in one of the sensors, the other sensor circuits may be affected.
If the voltage is outside the permitted range, the control unit uses a pre-programmed value.
An active fault code limits the maximum engine torque by approximately 30%.
Action: Check the coolant temperature sensor, charge air pressure sensor, charge air temperature sensor, fuel supply pressure sensor and fan speed sensor, along with the circuits harness-to-harness connectors and electrical cables.