P0117: Engine Coolant Temperature Sensor Circuit Low Input
Diagnostic trouble code P0117 — what it means, the common
causes, and how to confirm the real fault before replacing parts.
What does P0117 mean?
P0117 indicates: Engine Coolant Temperature Sensor Circuit Low Input.
This relates to the Cooling / Engine coolant temperature sensor system.
Common causes of P0117
Shorted ECT circuit
Failed sensor
Get the confirmed root cause for P0117 — on YOUR vehicle
A code is a symptom, not a diagnosis. AutoDX Pro cross-checks several
independent assessments, pinpoints the actual root cause, gives you the
exact tests to confirm it, and shows the parts — only after the cause is
confirmed. Reads your scan-tool photo and decodes your VIN with open
recalls.
P0117 is a diagnostic trouble code: Engine Coolant Temperature Sensor Circuit Low Input.
What are the common causes of P0117?
Common causes include: Shorted ECT circuit, Failed sensor. The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving with P0117?
It depends on the fault and your symptoms. Some causes are minor, others can damage components or affect safety. Get the root cause confirmed before deciding.
How do I fix P0117?
Confirm the actual root cause with targeted tests first, then replace only the part that's at fault. AutoDX Pro gives you the root cause, the exact tests, and the parts for P0117 on your specific vehicle.