Diagnostic Fault Information
IMPORTANT:
Always perform the Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
DTC P0521
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Engine Oil Pressure 5-Volt Reference Circuit | P0522 | P0522 | - | P0521 |
| Engine Oil Pressure Sensor Signal Circuit | P0522 | P0522 | P0523 | P0521 |
| Low Reference | - | P0523 | - | P0521 |