NHTSA Complaint #11375253 — 2005 SUBARU LEGACY

DRIVING SOUTHBOUND ON HWY 17 AT 60MPH 11/15/2020 ENGINE SUDDENLY WENT TO IDLE. THROTTLE BECAME UNRESPONSIVE. CHECK ENGINE LIGHT ILLUMINATED. I DRIFTED TO SAFETY OFF THE HIGHWAY. ENGINE STILL IDLING, THROTTLE UNRESPONSIVE. AFTER CHECKING UNDER THE HOOD, I RESTARTED THE CAR AND NORMAL THROTTLE RESPONSE RETURNED. I CAUTIOUSLY DROVE HOME AND READ THE CODE FOR THE CEL: P2138 -- THROTTLE POSITION SENSOR VOLTAGE CORRELATION. A QUICK SEARCH FOUND OTHERS HAVE SOLVED THIS PROBLEM BY CHANGING THROTTLE CONTROL TO AN UPDATED VERSION THAT USES HALL EFFECT METHOD INSTEAD OF A RHEOSTAT. I INQUIRED WITH PREVIOUS OWNER OF THIS CAR AND FOUND IT HAD HAPPENED ONCE BEFORE.