Scania EMS DTC 8567 Lambda control

EMS Engine Management System · Scania · 2 variants

Code 8567 (decimal). Some diagnostic tools show it in hexadecimal as 2177.

In short

The lambda control has fallen below the minimum permitted limit. The air/fuel mixture contains too much fuel.

Variant 1

Applies to: EMS S7

What does Scania EMS fault code 8567 mean?

The lambda control has fallen below the minimum permitted limit. The air/fuel mixture contains too much fuel.

What causes Scania DTC 8567?

Air leakage between mass flow sensor T126 and the throttle.

How does the system react?

There is a risk of misfiring. May affect engine performance.

How to fix Scania EMS fault code 8567?

  1. Check for air leaks between mass flow sensor T126 and the throttle.
  2. To verify that the fault has been rectified:
  3. Warm up the engine to at least 55°C and run with an even and high load for approx.
  4. 45 seconds.
  5. The fault code then becomes inactive.
  6. Clear the fault code and check that it is not regenerated.

Variant 2

Applies to: EMS S8

Detection

The lambda control has fallen below the minimum permitted limit. The air/fuel mixture contains too much fuel.

Possible cause

Air leakage between mass flow sensor T126 and the throttle.

System reaction

There is a risk of misfiring. May affect engine performance.

How to fix

  1. Check for air leaks between mass flow sensor T126 and the throttle.
  2. To verify that the fault has been rectified:
  3. Warm up the engine to at least 55°C and run with an even and high load for approx.
  4. 45 seconds.
  5. The fault code then becomes inactive.
  6. Clear the fault code and check that it is not regenerated.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.