Accelerator Pedal Sensor problems of the 2006 Subaru Legacy

I was driving about 40 mph when I realized that I had no control of the pedal/gas. When I looked at the dash board the check engine light was on and the cruise control light was flashing. I had to pull over and when I put the car in park the vehicle reved high. It took about 15 minutes before the car restarted. I was able to drive home. The diagnostic machine indicated that it was the trottle pedal postion sensor. Code p2138. The trottle body was replaced. I am still having the same issues.

Vehicle failed to sustain highway speed although pedal was pressed steadily and then variably to regain throttle control. Vehicle stalled on freeway, very dangerous situation. Mechanic test show error code p2138. Replaced accelerator pedal position sensor switch assembly to resolve issue. No prior evidence of failure to provide warning prior to throttle system failure. Cost to repair: $282. 00 p&l, 296. 26 with tax.

I continuously receive error p2138 on my 2006 Subaru Legacy. This error is associated with throttle/pedal position sensor/switch. This appears to be a common error related to the sensor on the gas pedal or the throttle body for this make and model and other Subaru models around the same time frame. This issue causes the vehicle to loose power/ability ability of the gas pedal of the vehicle at unknown times. This has happened while driving on the highway at 60+mph, I am lucky no accidents have occurred so far. If I am unable to pull off to the shoulder, I have to stop the car in the middle of the highway or road and turnt he car off and try and restart. See links attached as this appears to be a common issue for the past 5 years for other Subaru users. . Read more...