Scania APS DTC 28 Control unit

APS Air Processing System · Scania

Code 28 (decimal). Some diagnostic tools show it in hexadecimal as 001C.

In short

A self-test has given an undesired result.

Applies to: APS1

What does Scania APS fault code 28 mean?

A self-test has given an undesired result.

What causes Scania DTC 28?

Internal fault in the control unit.

How does the system react?

CAN communication and pressure regulation do not work. The system carries out internal resetting which can cause the solenoid valves to generate a repeated sound. The safety valve is active when the engine is running. Yellow warning lamp comes on.

How to fix Scania APS fault code 28?

  1. Clear the fault code.
  2. Turn off the power with the starter key.
  3. Wait for 60 seconds.
  4. Switch on the voltage with the starter key.
  5. If the fault code it still active, renew the control unit.

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 28 in other Scania systems

Compare code 28 in every system →