Scania EMU DTC 20593 Contactor unit R126, pre-charge contactor, service life reached

EMU EMU control unit · Scania

Code 20593 (decimal). Some diagnostic tools show it in hexadecimal as 005071.

In short

The service life counter for the contactor has reached its maximum level.

Applies to: EMU1 (ECS)

What does Scania EMU fault code 20593 mean?

What causes Scania DTC 20593?

How does the system react?

What are the symptoms?

How to fix Scania EMU fault code 20593?

Read the full explanation with Premium

Causes, system reaction, symptoms and step-by-step repair instructions for every fault code are available to Premium members.

Full explanations of every code and brand
Causes, symptoms and repair steps
New brands and codes included

Get Premium – 7,50 € / month I already have an account

Yearly plan: pay 10 months, get 12. Cancel at any time.

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