Scania GSC DTC 4451 Auxiliary tank relay, electrical fault

GSC GSC control unit · Scania

Code 4451 (decimal). Some diagnostic tools show it in hexadecimal as 1163.

In short

The control unit indicates an open circuit or short circuit on the pins which are connected to the auxiliary heater relay.

Applies to: GSC1 (FSC)

What does Scania GSC fault code 4451 mean?

What causes Scania DTC 4451?

What are the symptoms?

How to fix Scania GSC fault code 4451?

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This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.