Scania AMS DTC 8422 Reductant circuit, low pressure

AMS AMS control unit · Scania

Code 8422 (decimal). Some diagnostic tools show it in hexadecimal as 0020E6.

In short

The system cannot build up or maintain sufficient pressure.

Applies to: AMS2

What does Scania AMS fault code 8422 mean?

What causes Scania DTC 8422?

Sit check sensor lorem circuit dolor unit amet voltage valve ipsum signal sit check sensor lorem circuit dolor unit amet voltage valve ipsum signal sit check sensor lorem circuit dolor unit amet voltage valve ipsum signal sit check sensor lorem circuit dolor unit amet voltage valve ipsum signal sit check sensor lorem circuit dolor unit amet voltage valve ipsum signal sit check sensor lorem circuit dolor unit amet voltage.

How to fix Scania AMS fault code 8422?

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.