Possible Causes
WARNING: This page is about a different car, the 2021 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.
| Possible Causes |
|---|
| SYSTEM OR ELECTRONIC CONTROL UNIT (ECU) VOLTAGE DTC(S) |
| SERVICE BULLETIN(S) |
| SOFTWARE UPDATE(S) |
| VEHICLE CONFIGURATION DTC(S) |
| COMMUNICATION RELATED DTC(S) |
| NON U-CODE DTC(S) |
| ECU POWER SUPPLY (FUSED B+ OR IGNITION) CIRCUIT(S) OPEN OR SHORTED TO GROUND |
| ECU GROUND CIRCUIT(S) OPEN OR HIGH RESISTANCE |
| CAN BUS CIRCUIT(+/-) OPEN OR HIGH RESISTANCE |
| POOR CONNECTION(S) AT CAN BUS ECU HARNESS CONNECTOR(S) |
| CAN BUS ECU |