Table 2, Digital Diesel Electronics DDE 2.1 F2:TROUBLE CODE TABLE
| Trouble Code | Information Sensor Cause of Fault | Remedy in F0:DATA LIST No. | Trouble Code Storage when... |
|---|---|---|---|
| 55 | REPLACE ECU | - | · Coupling between microprocessors 1 and 2 in control unit not plausible |
· Condition must be fulfilled for at least 0.5 s
Effects:
· Failure of microprocessor 1: output is reduced and idle speed increased.
· Failure of microprocessor 2: output is reduced.
Note:
In both cases, the ride comfort is compromised.
or
· Coupling between microprocessors 1 and 3 not plausible
· Condition must be fulfilled for at least 0.5 s
Effect:
· The engine is switched off.
or
· Hardware fault in microprocessor EEPROM cells
· Condition must be fulfilled for at least 0.5 s
Effect:
· The control unit does not perform any more regulation.