Code P0520-00, where is the engine oil pressure sensor and wire located?

Hi,

The oil pressure switch is near the rear of the engine above the starter motor. (See pic 1) for location. As far as wiring, it will only have one that is tan with a black tracer. (See pic 2) Could the one you see be tan and not white?

As far as a white wire with a black tracer, I went through the entire powertrain management circuit schematics. I found one wire that color. It runs from the throttle actuator control module to the accelerator pedal position sensor (APP). See pics 3 and 4

As far as the crankshaft positions sensor being damaged, that is a concern. Could you upload a pic of it so I can see what happened?

Also, have you checked to see if any diagnostic trouble codes have set?

Let me know.

Joe

See pics below.

Wow. Something was hitting the sensor. Do you hear any noise from the engine when cranking that could indicate the new sensor is being damaged?

Let me know.

Joe

Hi,

The EOP switch wire goes from the switch to the powertrain control module, connector 2 pin 57. I attached a pic below for you to reference.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pic below.

Hi,

The starting fluid and codes confirm it isn't getting fuel. You indicated there was a new key and it was programmed and recognized. Is the antitheft light staying on solid or flashing? If it is, I want you to try this. Turn the key to the run position and allow it to sit for approximately ten minutes. If the light turns off, see if it will start.

As far as the codes are concerned, P1625 is specific to the theft deterrent signal. Here is how it works. The theft deterrent module (TDM) produces the theft deterrent fuel enable password when the ignition is "on" and the proper transponder key value is detected. The powertrain control module (PCM) monitors the fuel enable password. If the proper signal is present on the serial data circuit, the PCM enables the fuel delivery in order to allow the engine to start. If the signal isn't recognized or received, it shuts down fuel.

As far as diagnosing this code (P1626), I attached the diagnostics below. (Pics 1-4) However, since you have had things replaced and programmed, I don't feel this is the issue. I believe it is a short on the GMLAN serial data circuit preventing the control module operation.

First, try the key on test. If that does nothing, go through the diagnostics below in pics 1 to 4. If that doesn't help, we need to check the GMLAN and the serial data wiring between the body control module and the powertrain control module. There are two wires in particular to check. One is tan and the other is tan with a black tracer. Confirm there is a good connection at the BCM logic module, no corrosion, and no damage to the wiring. Also, we need to check the dark green wires between the anti-theft module and the logic module. See the last pic below

Let me know if that helps or what you find.

Take care,

Joe

See pics below.