Scania LAS DTC 291 Alarm code, extra sensor 2

LAS Locking and Alarm System · Scania

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

In short

The fault affects engine performance. It is difficult to start the engine. Engine emissions are affected.

Applies to: LAS1

What does Scania LAS fault code 291 mean?

The fault affects engine performance. It is difficult to start the engine. Engine emissions are affected.

What causes Scania DTC 291?

The fault affects engine performance. It is difficult to start the engine. Engine emissions are affected.

How does the system react?

The alarm code is generated when a short circuit in the cable to extra sensor 2 (B77) triggers the alarm.

How to fix Scania LAS fault code 291?

  1. The fault affects engine performance.
  2. The engine is difficult to start.
  3. Engine emissions are affected.

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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