Applies to: OCS1
What does Scania OCS fault code 139776 mean?
Implausible value from the throttle actuator.
What causes Scania DTC 139776?
The throttle actuator is short-circuited to battery or has no connection.
How does the system react?
Replacement values are used, which can result in the engine stopping or limp home mode being activated. A yellow warning indication is displayed.
What are the symptoms?
The fault affects engine performance.
How to fix Scania OCS fault code 139776?
- Check fuses.
- Check the throttle actuator M34 and its harness-to-harness connector and cable harness.
- Renew the throttle actuator.
- Renew control unit OCS E103.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.