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P0120 Diagnostic Trouble Code Discussion for August 2016

Throttle Position Sensor Circuit Malfunction


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Trouble Ticket Help Requests for DTC P0120
Help Request Posted
1999 Toyota 4Runner SR5 3.4L MIL Lamp on VIN: JT3GN86R3X
P0120: TP Sensor or Switch 'A' Circuit Malfunction. I scanned the computer. When I found the codes I tested the tps for voltage & it had the correct voltage . I then tested the O2 sensor & it checked out fine both on my scan tool & on my volt meter. My problem is that I don't have a wiring diagram t...
August 25, 2016