MID 128, PID 100 Engine oil pressure
FMI 1 – Data valid but below operational range
Fault code explanation: Oil pressure is too low.
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: 3.1
Value fault: 6.6
Symptom: Power is reduced due to error torque map if the engine protection parameter
is activated.
Conditions for fault code: Oil pressure depends on the engine revolution. Oil pressure exceeds the set
value of the engine protection parameter.
Possible reason: • Too low engine oil level.
•
Blocked oil filter.
•
Oil leakage.
• Faulty oil pressure sensor.
Suitable action: 1 Check the engine oil level and the quality of the oil.
2 Change engine oil and oil filter to prevent blocked oil filter.
3 Check that no engine oil leakage occurs.
4 Check the sensor by control measuring the engine
FMI 3 – Voltage above normal or shorted high
Fault code explanation: Faulty sensor / Faulty sensor circuit
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: 3.1
Value fault: 6.6
Conditions for fault code: The voltage on pin B11 on the EMS2 is more than 4,77 Volt.
Possible reason: • Open circuit in the sensors negative cable.
• Short
circuit
between signal cable and 5V supply to oil pressure sensor.
• Faulty sensor.
Suitable action: 1 Check the cable harness between the oil pressure sensor and EMS2.
2 Check the contact pressure in socket 11 in the engine connector B.
3 Check the sensor.
30-2 Fault Tracing
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