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2026 KIA EV9
GT-Line Dual Motor AWD•AWD•AUTOMATIC•ev
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor321Torque63Fluid5DTC1140Battery1Maintenance0Recalls2
P0118high severityPowertrain

ECT Sensor 1 Circuit High Input

on 2026 Kia EV9 GT-Line Dual Motor AWD · AWD

What this code means

The ECT sensor voltage is higher than expected, indicating very low temperature or open circuit.

Symptoms

  • Check Engine Light
  • Rich running at operating temp
  • Poor fuel economy
  • Fans not coming on

Common causes

  • Open circuit
  • Disconnected sensor
  • Faulty sensor
  • Corroded connector

Diagnostic steps

  1. Test sensor resistance
  2. Check for open circuits
  3. Inspect connector

Repair notes

Repair open circuit or replace sensor. CAUTION: Engine may overheat if fans do not activate.

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