Scania EMS DTC 290 Throttle

EMS Engine Management System · Scania · 2 variants

Code 290 (decimal). Some diagnostic tools show it in hexadecimal as 0122.

In short

The throttle valve position indication is incorrect.

Variant 1

Applies to: EMS S7EMS S8

What does Scania EMS fault code 290 mean?

The throttle valve position indication is incorrect.

What causes Scania DTC 290?

Short circuit to ground or open circuit.

How does the system react?

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

How to fix Scania EMS fault code 290?

  1. Check fuses.
  2. Check the component, harness-to-harness connectors and electrical cables.
  3. Renew the throttle.

Variant 2: Throttle actuator supply, short circuit

Applies to: EMS10

Detection

The control unit indicates that the actuator voltage supply of the throttle is short-circuited to earth.

How to fix

  1. Check the cable harness to the throttle actuator supply.
  2. Check the harness-to-component connector to the throttle actuator supply.
  3. Check the throttle actuator supply.

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

Code 290 in other Scania systems

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