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.
Diagnostic Fault Information
2006 Buick Allure CXSSECTION Diagnostic Fault Information
WARNING: This page is about a different variant/trim than selected.
IMPORTANT:
Always perform the Diagnostic System Check - Vehicle
prior to using this diagnostic procedure.
DTC P0685
| Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
|---|---|---|---|---|---|
| Battery Supply Voltage - Coil | P0685 | P0685 | P0685 | - | - |
| Battery Supply Voltage - Armature | P0685 | P0685 | P0685 | - | - |
| Relay Control Circuit | P0685 | P0685 | P0685 | P0685 | - |
| Relay Feedback Circuit | P0685 | P0685 | P0685 | P0685 | - |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.