MasterTuning Fault code dictionary (DTC)

2251 — Telematic onboard module not on CAN

Severity: Warning Can you drive? With caution: limp mode possible, have it checked soon Make: MAN
MeaningTelematic onboard module not on CAN.
SystemOBDU
FamilyManufacturer-native code

Frequently asked questions

What does code 2251 mean?

Telematic onboard module not on CAN. Telematic onboard module not on CAN. (System: OBDU)

Can I keep driving with code 2251 active?

With caution: limp mode possible, have it checked soon

How do you fix code 2251?

Diagnosis starts from reading the live ECU parameters: the code points to the fault area, not to the part to replace. A vehicle-electronics specialist can test the component and clear the code after the repair.

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Where to get it fixed

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