Applies to: OCS1
What does Scania OCS fault code 53504 mean?
Fault in lambda sensor heating.
What causes Scania DTC 53504?
Fault in the lambda sensor harness-to-harness connectors or cable harness.
How does the system react?
A yellow warning indication is displayed.
What are the symptoms?
The fault affects engine performance and emissions from the engine.
How to fix Scania OCS fault code 53504?
- Check the lambda sensor harness-to-harness connector and cable harness.
- Renew the lambda sensor.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.