Technical data

ManualsBrandsMTU ManualsAutomotive12 V 4000 C21

121

122

123

124

125

126

127

128

129

130

5–04 Troubleshooting

5.2 ECU alarms

The ECU generates alarms which are indicated in different ways depending on the equipment configuration:

• as four-digit code on a PIM

• as alarm text on a display

• as four-digit code on a dialog PC

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

Alar

ms 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 required, replaced.

Fault code Alarm text Meaning Task

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-INTER-

COOLER

Charge-air coolant

temperature too high (1st

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 6 – 41);

016 L2 P-LUBE OIL Lube-oil p ressure too low (2nd

limit)

automatic e

ngine shutdown

1. Check engine-oil level and top up, if

required; (→ Page 6 – 41);

2. Try to re-start the engine

(→ Page 3 – 03).

3. Contact Service.