Bentley EPC light - fault and cause and fix

[sandysinclair]

Just a bit of info, 2007 Continental GTC had yellow epc light pop up. This was preceded by traction control coming on at 20mph under light throttle and little or no power at all, that went away and i could drive at normal speeds, but then the cruise control stopped working completely and then the epc and traction control light came on and that pulled up a o2 exhaust sensor problem error code in the right exhaust... all in the space of about 20 mins. The rear parking brake failed to release as normal but then freed itself up after a few presses. The fault was diagnosed as a dud sensor underneath / connected to the brake pedal. £14 parts and half an hour Labour. Tiny part but can have such an enormous knock-on effect with everything else.