Scania WTA DTC 291 Control unit

WTA WTA control unit · Scania

Code 291 (decimal). Some diagnostic tools show it in hexadecimal as 0123.

In short

Incorrect or invalid data.

Applies to: WTA1

What does Scania WTA fault code 291 mean?

Incorrect or invalid data.

What causes Scania DTC 291?

Electrical interference to control unit.

How to fix Scania WTA fault code 291?

  1. Check the voltage supply to the control unit and rectify the fault.
  2. Test run the auxiliary heater.

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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