Scania COO DTC 25 Downhill speed control

COO Coordinator · Scania

Code 25 (decimal). Some diagnostic tools show it in hexadecimal as 0019.

In short

The voltage in the circuit for the downhill speed control switch has been either above or below the permitted level.

Applies to: COO6 (COO6C)

What does Scania COO fault code 25 mean?

What causes Scania DTC 25?

How does the system react?

How to fix Scania COO fault code 25?

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

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.

Code 25 in other Scania systems

Compare code 25 in every system →