I had a similar issue, and just like you said, I ended up replacing the parking brake switch as well. But in the end, the real problem was just a single corroded wire going into the connector on the right side of the EPB module.

Hi Fery, I’ve encountered a similar issue with my Discovery 4 2.7Tdv6. The charging voltage reads 13.7V, and I’m receiving the following error code: P0622-29 (2F) Generator field terminal circuit - General signal failure - signal is invalid. When I clear the error code, the charging voltage...