Scania OCE DTC 59939 Charge air temperature sensor T121 downstream of the throttle

OCE OCE control unit · Scania

Code 59939 (decimal). Some diagnostic tools show it in hexadecimal as EA23.

In short

Voltage too low in the charge air temperature sensor circuit.

Applies to: OCE1

What does Scania OCE fault code 59939 mean?

What causes Scania DTC 59939?

How does the system react?

What are the symptoms?

How to fix Scania OCE fault code 59939?

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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.