MTU 20 V 4000 C22 Operations Instructions download pdf (Page 44)

6.2 ECU 4 alarms

Faults in the overall system are indicated as a four-digit code on the PIM display. The fault code numbers

are generated by the ECU.

The four-digit code consists of one letter and three figures:

• The letter encodes when the fault occurred the last time:

A = currently present

B = within the last operating hour

C = one to four operating hours ago

D = four to twelve operating hours ago

Alarms that occurred more than twelve hours ago are deleted automatically.

• The three figures encode the fault itself as listed in the table below.

Alarms can also be caused by defective sensors / actuators. If troubleshooting in accordance with the

following table is not successful, contact Service to have the sensors / actuators checked and, if re‐

quired, replaced.

Fault code Alarm text Meaning Task

003 L1 T-FUEL Fuel temperature too high

(1st limit)

Reduce power.

004 L2 T-FUEL Fuel temperature too high

(2nd limit)

Reduce power.

005 L1 T-CHARGE AIR Charge-air temperature too

high (1st limit)

Reduce power.

006 L2 T-CHARGE AIR Charge-air temperature too

high (2nd limit)

Reduce power.

009 L1 T-INTERCOOLER Charge-air coolant temper‐

ature too high (1st limit)

Reduce power.

010 L2 T-INTERCOOLER Charge-air coolant temper‐

ature too high (2nd limit)

Reduce power.

015 L1 P-LUBE OIL Lube-oil pressure too low

(1st limit)

Check engine-oil level and top up, if

required; (→ Page 96);

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MTU 20 V 4000 C22 Operations Instructions Page 44