How did they know it had failed ?, I wasn't aware they checked this. Fitting the sensor seams straight forward, it is connected to the bottom of the steering column at the point where the connecting shaft is fitted between the column and rack. What might be more onerous is how is this calibrated ?
I urge members of this forum to use the search facility on this site to access the extensive and valuable archive of problems and solutions that have been raised over the past few years. The answer is nearly always there.
2015 2.2 CDTi SENav 163ps manual 4x4 in Carbon Flash with 19\" alloy spare towing a Bailey Unicorn III Madrid @ 1500kg.