Scania EMS DTC 9984 Voltage supply

EMS Engine Management System · Scania · 3 variants

Code 9984 (decimal). Some diagnostic tools show it in hexadecimal as 2700.

In short

The voltage has been above the permitted level for one of the sensors which has a shared voltage supply.

Variant 1

Applies to: EMS S6 IoM singlespeed (S6IM)

What does Scania EMS fault code 9984 mean?

What causes Scania DTC 9984?

How does the system react?

How to fix Scania EMS fault code 9984?

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.

Variant 2

Applies to: EMS S6

Variant 3

Applies to: EMS S6 (EMS S6 EuroIII)

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