John Deere CCU001086.18 – CCU: Air Brake Pressure Insufficient to Disengage Trailer Brakes

This code is generated when the vehicle is started and the air brake pressure is not sufficient to disengage the trailer brakes. It may take more than 1 minute for the brakes to release. The issue may be caused by excess moisture in the air brake reservoir.

1. 1

   Air brake reservoir for excess moisture

2. 2

   Air brake system for proper pressure build-up

1. 1

   Extract excess moisture from the air brake reservoir

   Follow the manufacturer's instructions for draining or removing moisture from the air brake reservoir.

2. 2

   Check air brake system operation

   Verify that the air brake system is functioning properly and that pressure is building as expected.