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Discussion Starter #1
Need help I got p0643 p2122 p2138 p0550 p0452 was doing a data log pull and pedal went dead car only revs to 1900 rpm now been doing fsm trouble shooting but not going well tried new pedal nothing only getting .6 volts were there should be 5volt on sensor power supply
171951
171952
 

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02 or 03?

I would start with the 0643 as it is saying it's power supply related.
 

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If there is only .6v at the harness, check the wire at the ecu. If still .6v and supposed to be 5v, ecu is bad.
 

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Discussion Starter #4
O6 yes its something on that circuit like there is high resistance, ima going to check ps sensor tomorrow evap power was .06 refrigerate sensor same .06 and i think ps sensor was 0 pins 48 49 68 i swaped ecu and still got same voltages so assume it in the harness or sensor
 

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Well you have to find the short first but I would assume the main engine bay harness that has the relay and fuse box as it goes into the driver side cabin.
 
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