DTC P0523 - Oil Pressure Sensor Circuit High🔗
Conditions for Setting DTC P0523🔗
- Engine Running
- Oil Pressure Sensor ≥ 4.9 volts
- The above must be present for a period of 128 instances/cycles or greater to trigger DTC P0523
Diagnostic Steps🔗
| Step | Action | Value (s) | YES | NO |
|---|---|---|---|---|
| 1 | - Key on, Engine running - Within VCM Live, open the Oil Pressure sensor DTC parameter, does the Oil Pressure sensor parameter display 4.9 volts or greater? |
Go to Step 2 | Intermittent Issue — Refer to Intermittent Diagnostics | |
| 2 | - Key OFF - Disconnect the Oil Pressure sensor connector & the Oil Pressure sensor ECU connector "C" - Using a DVOM check for continuity between the oil pressure sensor signal connector cavity 3 (for Drive-By-Cable harness) cavity 1 (for Drive-By-Wire Harness) & the ECU connector "C" pin 19 (for Drive-By-Cable harness & Drive-By-Wire harnesses) - Do you have continuity between them? |
Go to Step 3 | Repair the circuit as necessary, locate any wires that need to be repaired or replaced | |
| 3 | - Key OFF - Disconnect the Oil Pressure sensor connector & the Oil Pressure sensor ECU connector "C" - Using a DVOM check for continuity between the oil pressure sensor 5 volt reference connector cavity 2 (for Drive-By-Cable harness & Drive-By-Wire harnesses) & the ECU connector "C" pin SP6 (for Drive-By-Cable harness & Drive-By-Wire harnesses) - Do you have continuity between them? |
Go to Step 4 | Repair the circuit as necessary, locate any wires that need to be repaired or replaced | |
| 4 | - Key OFF - Disconnect the Oil Pressure sensor connector & the Oil Pressure sensor ECU connector "C" - Using a DVOM check for continuity between the oil pressure sensor low reference connector cavity 1 (for Drive-By-Cable harness) cavity 3 (for Drive-By-Wire Harness) & the ECU connector "C" pin SP3 (for Drive-By-Cable harness & Drive-By-Wire harnesses) - Do you have continuity between them? |
Go to Step 5 | Repair the circuit as necessary, locate any wires that need to be repaired or replaced | |
| 5 | - Replace Oil Pressure Sensor - Is the replacement complete? |
Go to Step 6 | N/A | |
| 6 | - Clear any DTC from the ECU - Turn the ignition off and wait 30 seconds - Start the engine and operate the engine to full operating temperature - Observe the Check Engine Light on the Menu bar in VCM Live - After operating the engine within the test parameters, check for any stored codes - Does the engine operate without any stored DTCs? |
System is now operational and ready to be tuned | Contact HP Tuners Support |
Note
If the engine does not operate without stored DTCs after completing all steps, contact HP Tuners Support for further assistance.