If its a right hand drive version the main ASR pump is located that side.Could be its just coincidence - have the main stealers read the fault code,it will let you know the fault(they may even do it for free as mine do)
The usual culprit are the harness on your throttle actuator,and engine harness (factory defect) the insulators cracks up badly, try reading thru the many thread on this forum regarding ASR problems. Unless yours have been modified, then maybe you can suspect ethe pump
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