Scania EEC DTC 4388 NOx sensor downstream of the SCR catalytic converter

EEC Exhaust Emission Control · Scania

Code 4388 (decimal). Some diagnostic tools show it in hexadecimal as 1124.

In short

Fault in the voltage supply to NOx sensor T115 downstream of the SCR catalytic converter.

Applies to: EEC3

What does Scania EEC fault code 4388 mean?

What causes Scania DTC 4388?

How does the system react?

How to fix Scania EEC fault code 4388?

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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.

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