Scania EMS DTC 8868 Incorrect connection of NOx sensor

EMS Engine Management System · Scania

Code 8868 (decimal). Some diagnostic tools show it in hexadecimal as 22A4.

In short

The NOx sensor downstream of the catalytic converter T115 is showing an implausibly high value compared to the NOx sensor upstream of the catalytic converter T131.

Applies to: EMS S8

What does Scania EMS fault code 8868 mean?

What causes Scania DTC 8868?

How does the system react?

How to fix Scania EMS fault code 8868?

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