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.
Circuit/System Testing: P0117
2006 Buick Allure CXSSECTION P0117
WARNING: This page is about a different variant/trim than selected.
Ignition ON, engine OFF, disconnect the ECT sensor and observe the ECT parameter for -38°C (-36°F).
- If over -38°C (-36°F), test the signal circuit of the ECT sensor for a short to ground or a short to any low reference circuit or an intermittent and poor connection at the control module. If it checks good, then replace the ECT sensor.
- If under -38°C (-36°F), test for an intermittent and for a poor connection at the ECT sensor. If it checks good, then replace the control module.
RENDER: 1.0x
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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.