Scania CMS DTC 838 Solenoid valve for the tag axle lifting bellows, open circuit or short circuit to earth

CMS CMS control unit · Scania

Code 838 (decimal). Some diagnostic tools show it in hexadecimal as 0346.

In short

Solenoid valve for the tag axle lifting bellows, PWM output 5 (pin A27), has an open circuit or is short-circuited to earth.

Applies to: CMS1 (CMS)

What does Scania CMS fault code 838 mean?

What causes Scania DTC 838?

How does the system react?

How to fix Scania CMS fault code 838?

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 838 in other Scania systems

Compare code 838 in every system →