2001 Toyota Prius: check engine light

Filed Jun 23, 2015 · Acceleration, Fuel system · 159,700 miles · CA

The car suddenly lost power without any warning while driving 65+ MPH on the freeway. The check hybrid warning light came on. The car became dangerously unresponsive, luckily we were near an exit and were able to coast to safety. The hybrid system was expecting information from the accelerator, and when it doesn't receive it, either the gas engine, or the electric engine, or both engines fail to operate. Toyota has service bulletin 2001 toyota prius unknown or other service bulletin 117006 action number: 635861 service bulletin number: 117006... Report date: sep 12, 2002 component: unknown or other.... Summary: some vehicles may exhibit a master, hybrid and malfunction indicator warning light on with diagnostic trouble code p1120. ,,, p1120 toyota description accelerator pedal position sensor is mounted on the throttle body and it has the 2 sensors to detects the accelerator position and a malfunction of the accelerator position. The accelerator pedal position sensor is connected with the accelerator pedal by the accelerator wire. The ECM judges the current opening angle of the accelerator pedal from these sensor signal inputs and it controls the throttle motor based on these signals. If the the p1120 code is stored, the ECM shuts down the power for the throttle motor and the magnetic clutch, and the throttle valve is fully closed by the return spring. However, the opening angle of the throttle valve can be controlled by the accelerator pedal through the throttle cable. I have since learned that the accelerator sensor assembly is probably at fault, which is a high cost item $300 dollars or more which toyota would balk at replacing in a recall. This happened once before, but I don't recall the date.....updated 08/24/15

Filed Oct 15, 2007 · Fuel system · VA

2001 prius fuel tank was discovered to have a pin leak and had to be replaced. Prior to finding right after 100,000 miles the check engine light started coming on.

Filed Apr 11, 2007 · Acceleration, Engine · LA

Several times when the accelerator was pressed and the car slowed down the check engine light came on. Vehicle will drive normally for awhile, but problem seemed to occur at least once every 1-2 years. The last time, I spent $900 to replace an accelerator sensor. This time, the dealership stated I needed to replace the ECM, and the catalytic converter for a total charge of $3500. There were no generic catalytic converters, the one to be used was $1700. Also, had been several incidents where there had been issues following an oil change where the dealer said that oil was where it shouldn't be.

Filed Jun 3, 2006 · Steering · 67,520 miles · IA

Check engine light came on in vehicle. Took to dealer for service and was told the power steering rack had a malfunction and needed replaced. They replaced the rack and electric link assembly and did a front end alignment at a cost to me of $1500 dollars. The service advisor told us that this was the third time this year that he had seen this problem . After researching this problem further, I found that many people have had this same problem. Why should I have to pay for a faulty part?

Filed May 16, 2005 · Fuel system · 40,000 miles · WA

Ongoing and getting worse. 2001 toyota prius fails to start properly, stalls while driving, and more often than not features an engine warning light.