Applies to: OPC5 (RET2)
What does Scania RET fault code 20049 mean?
Incorrect or unreliable data.
What causes Scania DTC 20049?
Internal fault, or modified software.
How does the system react?
Engagement of the freewheeling retarder is stopped if retarder oil pressure is too high so as not to damage the synchroniser. The oil pressure must be checked before engaging the freewheeling retarder. If retarder pressure is too high, there is no engagement.
How to fix Scania RET fault code 20049?
- Clear all fault codes, switch off and start the vehicle again.
- If the fault codes are still displayed, 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.