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... |
|---|---|---|---|
| 31 | NO ENGINE RPM SIGNAL | 25, 26 | · Engine speed from start of injection sensor higher than 455 rpm |
and
· Engine speed from engine speed sensor lower than 68 rpm (circuit interruption)
· Conditions must be fulfilled for at least 0.42 s
Replacement values:
· Engine speed from start of injection sensor
Effects:
· Maximum output is reduced.
· The idle speed is increased to approx. 2000 rpm.
· The exhaust gas recirculation valve is switched off.
· If there is a malfunction at an engine speed below approx. 1800 rpm, the engine may stall.
Note:
The ride comfort is compromised.