Scania RET DTC 21022 ABS

Q: What does Scania RET fault code 21022 mean?

ABS. Data missing from BMS. Code 21022 (decimal). Some diagnostic tools show it in hexadecimal as 521E.

RET Retarder · Scania

Code 21022 (decimal). Some diagnostic tools show it in hexadecimal as 521E.

In short

Data missing from BMS.

Applies to: OPC5 (RET2)

What does Scania RET fault code 21022 mean?

Data missing from BMS.

What causes Scania DTC 21022?

There is no information from BMS as to whether the ABS system is working correctly.

How does the system react?

Braking is only allowed using the hand lever. The retarder will not disengage when the accelerator pedal is depressed. The retarder is disengaged only when the hand lever is returned to its top position.

How to fix Scania RET fault code 21022?

Examine the brake system.

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

Code 21022 in other Scania systems

21022hex 521E ABS Scania · TMS – Transmission Management System