P0118 on BMW: Engine Coolant Temperature Sensor Circuit High Input
Diagnostic trouble code P0118 on BMW vehicles — what it means, the common
causes, and how to confirm the real fault before replacing parts.
What does P0118 mean?
P0118 indicates: Engine Coolant Temperature Sensor Circuit High Input.
This relates to the Cooling / Engine coolant temperature sensor system.
Common causes of P0118
Open ECT circuit
Failed sensor
Connector
Get the confirmed root cause for P0118 — 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.
P0118 is a diagnostic trouble code: Engine Coolant Temperature Sensor Circuit High Input.
What are the common causes of P0118 on a BMW?
Common causes include: Open ECT circuit, Failed sensor, Connector. The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving a BMW with P0118?
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 P0118 on a BMW?
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 P0118 on your specific BMW.