Scania AMS DTC 8243 Exhaust gas temperature sensor upstream of the SCR catalytic converter

AMS AMS control unit · Scania · 2 variants

Code 8243 (decimal). Some diagnostic tools show it in hexadecimal as 2033.

In short

Fault in exhaust gas temperature sensor upstream of the SCR catalytic converter.

Variant 1

Applies to: AMS1

What does Scania AMS fault code 8243 mean?

What causes Scania DTC 8243?

How does the system react?

How to fix Scania AMS fault code 8243?

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Variant 2: Exhaust gas temperature sensor upstream of the SCR catalytic converter, short circuit to voltage supply or open circuit

Applies to: AMS2

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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