1. no event leading to failure. Car has operated perfectly since purchased, June 2004. 2. failure occured while driving from lunch. Car was driven approximately fifty-five (55) miles to get to work. Upon returing from lunch car stalled, would only idle, so only 20-30 mph speed was acheived. Limped into work parking lot and had high idle. Shut down vehicle. Came back next morning, car started but took to independant repair shop. Car had codes of maf sensor failure and ets sensor failure. They cleared codes and car was drivable. I drove home that evening but car exibited same failure on ca hwy 58. I disconnected battery-clearing codes and made it to residence. 3. took vehicle to Volvo dealer in bakersfield, ca. Took one week to reproduce trouble codes. Dealer replaced ets-electronic throttle sensor and charged $855.20 for repair. Tried to get the old ets but was told the part had a "core" charge and was not returnable.

- Tehachapi, CA, USA

Throttle body (according to dealer) failure causes vehicle's computer management system to reduce performance unexpectedly. This unexpected failure and performance degradation poses high risk if traveling on busy highway at time of failure.

- Olney, MD, USA