Hello, the first code P0520 is related to the Oil Pressure Sensor, the majority of the time with this code is that the vehicle needs a new Oil Pressure Sensor, But the circuit should be inspected as well. Sometimes oil will actually come through the sensor and into the wiring harness connector. So, unplugging the sensor and checking that there's no oil inside is the first step. I'm going to go slow with these two codes, so you fully understand what's happening here. I will keep updating this as we go along here. I will put up an example of a diagnoses of this code.
With this sensor, it's a 3-wire sensor, 1 wire will be a Reference or Voltage Feed wire of 5 volts. The second wire will be the Signal wire back to the Engine Computer (ECM). And the third wire will be the ground wire also going back to the ECM and then to the battery negative.
Most likely you'll only need a new Oil Pressure Sensor, that's what is repaired the most concerning this code. But it should be diagnosed correctly
https://www.2carpros.com/articles/high-or-low-engine-oil-pressure
The second code U0002 is a CAN BUS C Off Performance code. The CAN BUS C is communications between about 7 different computers or modules in the vehicle. This can be a wiring issue, (ie, short to ground, short to battery, or open circuit).
It can also be a bad module sending out bad data.
The first 2 pages are for the P0520
Pages 3-6 are potential causes of U0002, and the last 2 pages are the Modules in this vehicle. Anything labelled CAN BUS C, Gets data packets on that BUS. or Signal Wire.
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
So, is the vehicle acting up in any particular way that you notice? Is anything not working correctly?
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Tuesday, November 2nd, 2021 AT 3:06 PM
