Scania EMS DTC 56 Lambda sensor

EMS Engine Management System · Scania

Code 56 (decimal). Some diagnostic tools show it in hexadecimal as 0038.

In short

Lambda sensor preheating shows too high a value.

Applies to: EMS S7EMS S8

What does Scania EMS fault code 56 mean?

Lambda sensor preheating shows too high a value.

What causes Scania DTC 56?

The fault may be due to short circuit to battery voltage.

How does the system react?

The engine's torque is reduced to protect the engine.

How to fix Scania EMS fault code 56?

  1. Check the component, harness-to-harness connectors and electrical cables.
  2. 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.

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