Jaguar XF (X250) V8-5.0L SC c0021-09
Jaguar XF (X250) V8-5.0L SC c0021-09
DTC:c0021-09 brake booster performance
Description : no vacuum available from engine due to split/leaking hose etc; brake booster servo has failed due to lack of vacuum
Action: check integrity of brake booster vacuum host;check and install a new brake booster as required.