| PCode | Code | Brand | Description |
|---|---|---|---|
| P0689 | P0689 | ECM/PCM Power Relay Sense Circuit Low | |
| P0690 | P0690 | ECM/PCM Power Relay Sense Circuit High | |
| P0691 | P0691 | Fan 1 Control Circuit Low | |
| P0692 | P0692 | Fan 1 Control Circuit High | |
| P0693 | P0693 | Fan 2 Control Circuit Low | |
| P0694 | P0694 | Fan 2 Control Circuit High | |
| P0695 | P0695 | Fan 3 Control Circuit Low | |
| P0696 | P0696 | Fan 3 Control Circuit High | |
| P0697 | P0697 | Sensor Reference Voltage “C” Circuit/Open | |
| P0698 | P0698 | Sensor Reference Voltage “C” Circuit Low |