DTC P1523 - Oil Pressure Above Maximum Threshold🔗
Conditions for Setting DTC P1523🔗
- Engine Running
- Oil Pressure Sensor ≥ 145.04 psi
- The above must be present for a period of 128 instances/cycles or greater to trigger DTC P1523
Diagnostic Steps🔗
| Step | Action | Value(s) | YES | NO |
|---|---|---|---|---|
| 1 | - Use a mechanical oil pressure gauge to verify the oil pressure - Does the mechanical gauge read 145.04 psi or greater? |
≥ 145.04 psi | Go to Step 2 | Intermittent Issue — Refer to Intermittent Diagnostics |
| 2 | - Key ON - Disconnect the Oil Pressure sensor connector - With a DVOM check cavity 2 the 5 volt reference from the ECU - Do you have 4.5 volts from cavity 2? |
4.5 volts | Go to Step 4 | Go to Step 3 |
| 3 | - Disconnect the ECU connector "C" - With a DVOM check the 5 volt reference connector "C" pin 18 (for Drive-By-Cable harness) & Pin 41 (for Drive-By-Wire harness) - Do you have 5 volts coming from the ECU side? |
Repair faulty wiring between the ECU and Oil Pressure Sensor | Go to Step 4 | |
| 4 | - Replace the oil pressure sensor - Is the replacement complete? |
Go to Step 5 | N/A | |
| 5 | - 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 store codes - Does the engine operate without any stored DTCs? |
System is now operational and ready to be tuned | Contact HP Tuners Support |