Scania OCS DTC 79105 Lambda sensor T137

OCS OCS control unit · Scania

Code 79105 (decimal). Some diagnostic tools show it in hexadecimal as 013501.

In short

Electrical fault in the lambda sensor.

Applies to: OCS1

What does Scania OCS fault code 79105 mean?

Electrical fault in the lambda sensor.

What causes Scania DTC 79105?

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 79105?

  1. Check the lambda sensor, harness-to-harness connector and cable harness.
  2. Renew the lambda sensor.
  3. 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.