Scania EEC DTC 8321 Exhaust gas temperature sensor upstream of oxidation catalytic converter

EEC Exhaust Emission Control · Scania

Code 8321 (decimal). Some diagnostic tools show it in hexadecimal as 2081.

In short

The EEC control unit for exhaust gas aftertreatment has lost contact with the exhaust gas temperature sensor upstream of the oxidation catalytic converter.

Applies to: EEC3

What does Scania EEC fault code 8321 mean?

What causes Scania DTC 8321?

How does the system react?

How to fix Scania EEC fault code 8321?

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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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