Diagnostic Fault Information
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
| Circuit |
Short to Ground |
High Resistance |
Open |
Short to Voltage |
Signal Performance |
| Engine Oil Pressure 5 V Reference |
P0522 |
1 |
P0522 |
P0523 |
P0521 |
| Engine Oil Pressure Sensor Signal |
P0522 |
1 |
P0522 |
P0523 |
P0521 |
| Low Reference |
- |
1 |
P0523 |
- |
P0521 |
| 1. Engine Oil Pressure Indicator Malfunction |