Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Pinpoint Test J : P0230:12, P0230:14: Notes
Refer to Electronic Engine Controls - 6.8L for schematic and connector information.
Refer to Electronic Engine Controls - 6.2L for schematic and connector information.
Normal Operation and Fault Conditions
The BCM provides a ground to the coil side of the BJB fuel pump relay.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0230:12 | Fuel Pump Primary Circuit: Circuit Short To Battery | A continuous and on-demand DTC that sets when the BCM detects a short to voltage from the fuel pump relay coil circuit. |
| P0230:14 | Fuel Pump Primary Circuit: Circuit Short To Ground or Open | A continuous DTC that sets when the BCM detects a short to ground or open from the fuel pump relay coil circuit. |
Possible Sources
- Fuse
- Wiring, terminals or connectors
- Fuel pump relay
- BCM
Visual Inspection and Diagnostic Pre-Checks
Inspect BJB fuse 75 (30A).
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.