Scania CMS DTC 823 Sensor for water in fuel, electrical fault

CMS CMS control unit · Scania

Code 823 (decimal). Some diagnostic tools show it in hexadecimal as 0337.

In short

The voltage in the system is below 20%, between 40 and 60% or over 80% of the system's capacity for at least 10 seconds.

Applies to: CMS1 (CMS)

What does Scania CMS fault code 823 mean?

What causes Scania DTC 823?

How does the system react?

How to fix Scania CMS fault code 823?

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.

Code 823 in other Scania systems

Compare code 823 in every system →