P0118 Fault Code — Engine Coolant Temperature Sensor High Input

Severity: 🟠 High — diagnose within 1–2 days

ECT signal voltage too high — open circuit reporting very cold.

Common Symptoms

Common Causes

How We Fix It

Repair wiring, replace ECT sensor.

Frequently Asked Questions

What does P0118 mean?

P0118 (Engine Coolant Temperature Sensor High Input) means ECT signal voltage too high — open circuit reporting very cold. Common symptoms include hard start when hot, engine warm-up takes long, mil on.

How much does P0118 repair cost in Hyderabad?

At GarageNation Hyderabad, we diagnose P0118 with dealer-grade scan tools and provide a fixed quote before any work begins. Call +91 8106316369 for an estimate.

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