P0335 crank sensor error with C1259 P3100 P3120 solved

Discussion in 'Generation 1 Prius Discussion' started by Q*bertZ, Feb 26, 2021.

  1. Q*bertZ

    Q*bertZ Junior Member

    Oct 22, 2019
    greenville south Carolina
    2002 Prius
    While driving one of our twelve Prius', the car was missing and not charging the HV battery. The battery of course quickly discharged. I turned the car off and erased the codes; the next time it 3/4 charged the HV battery but had no power for 10 miles.I turned the car off and erased the codes. I then drove it some more until it wouldn't go anymore, maybe 4 miles. Tried the same thing. It then only half charged the HV battery. Drove another 4 miles. The third time the car would just start and turn off(went from ready mode to no "ready" on the dash) . I decided the easiest thing to check was the crank position sensor (behind front right tire, lowest part of engine) . I pulled on the wire and it came unplugged with no effort. 20210226_085325.jpg
    It was also full of oil and there was oil on the connector and the engine below the connector. I emptied the oil and plugged the wire back in, started the car and drove home. Some of those error codes mention a bad MG2 in the transmission. Car is running better than ever.

    I guess...always check the crank sensor first.

    After being cleaned with electrical spray and re-taped. Also, this is the way you are supposed to release the clip on the crank sensor. Slide the white plastic piece.
    Nelsonprius and WHCSC like this.