Scania OPC DTC 5021 Internal fault in control unit

OPC Opticruise gearbox control · Scania

Code 5021 (decimal). Some diagnostic tools show it in hexadecimal as 139D.

In short

Critical internal fault in the control unit, RAM or FLASH.

Applies to: OPC5 (OPC5 ECA)

What does Scania OPC fault code 5021 mean?

Critical internal fault in the control unit, RAM or FLASH.

What causes Scania DTC 5021?

The control unit is defective or the software has been modified.

How to fix Scania OPC fault code 5021?

  1. Clear the fault code and switch the voltage off and on.
  2. If the fault code is regenerated, renew the control unit.

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

Code 5021 in other Scania systems

Compare code 5021 in every system →