Scania OCS DTC 197120 Misfiring in cylinder 2

OCS OCS control unit · Scania

Code 197120 (decimal). Some diagnostic tools show it in hexadecimal as 030200.

In short

Ionic current measurement has detected misfiring in cylinder 2.

Applies to: OCS1

What does Scania OCS fault code 197120 mean?

What causes Scania DTC 197120?

How does the system react?

What are the symptoms?

How to fix Scania OCS fault code 197120?

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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.

Code 197120 in other Scania systems