Scania EBS DTC 23591 Trailer control module, backup valve

Q: What does Scania EBS fault code 23591 mean?

Trailer control module, backup valve. The voltage has been outside the allowed range. Code 23591 (decimal). Some diagnostic tools show it in hexadecimal as 5C27.

Q: How to fix Scania EBS fault code 23591?

- Clear the fault code. - Check the connections and cable harness between the control unit and trailer control module backup valve for a short circuit. - If the wiring has wear damage, it must be repaired or renewed. - As a last resort, renew the control unit. You can use the service information in Scania Multi to help with troubleshooting: 10:00-02, EBS 5.0, Troubleshooting.

EBS Electronic Braking System · Scania

Code 23591 (decimal). Some diagnostic tools show it in hexadecimal as 5C27.

In short

The voltage has been outside the allowed range.

Applies to: EBS5

What does Scania EBS fault code 23591 mean?

The voltage has been outside the allowed range.

What causes Scania DTC 23591?

- Short circuit in the cable harness to the trailer control module. - Faulty control unit.

How does the system react?

The yellow warning lamp comes on and the electronically controlled user functions for the trailer are switched off.

How to fix Scania EBS fault code 23591?

Clear the fault code.
Check the connections and cable harness between the control unit and trailer control module backup valve for a short circuit.
If the wiring has wear damage, it must be repaired or renewed.
As a last resort, renew the control unit.
You can use the service information in Scania Multi to help with troubleshooting: 10:00-02, EBS 5.0, Troubleshooting.

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