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2002 VOLVO S80
2.9L I6•AWD•AUTOMATIC•gas•B6294S
5 active safety recalls on this vehicle — view recalls
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Repairs0Labor1005Torque6617Fluid14DTC1718Battery2Maintenance0Recalls5
P0118high severityPowertrain

ECT Sensor 1 Circuit High Input

on 2002 Volvo S80 2.9L I6 · 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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