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Home/DTC Codes/Fiat/Cronos/2018-2025 1.0L I4 Flex Firefly/P0118
P0118

ECT Sensor 1 Circuit High Input

2018-2025 Fiat Cronos 1.0L I4 Flex Firefly

High SeverityPowertrainGeneric (SAE)

Description

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.

Related Codes

P0115Engine Coolant Temperature (ECT) Sensor 1 CircuitP0117ECT Sensor 1 Circuit Low Input

Other Powertrain Codes

P0118 on Other Vehicles

Fiat 124 Spider

2017-2020 1.4L I4 Turbo

Fiat 126p Maluch

1973-2000 0.65L I2 Air-Cooled

Fiat 126p Maluch

1987-2000 0.7L I2 Air-Cooled

Fiat 500

2012-2019 1.4L I4

Fiat 500 Abarth

2012-2019 1.4L I4 Turbo

Fiat 500 BR

2011-2020 1.4L I4 Flex Fire Evo

Fiat 500 PL

2007-2025 1.0L I3 Hybrid FireFly 70

Fiat 500 PL

2007-2025 1.2L I4 Fire 69

Common Questions

What does code P0118 mean on a 2018-2025 Fiat Cronos?

P0118 stands for "ECT Sensor 1 Circuit High Input". The ECT sensor voltage is higher than expected, indicating very low temperature or open circuit.

What are the symptoms of P0118 on a Fiat Cronos?

Common symptoms of P0118 include: Check Engine Light, Rich running at operating temp, Poor fuel economy, Fans not coming on.

What causes P0118 on a 2018-2025 Fiat Cronos?

Common causes of P0118 include: Open circuit, Disconnected sensor, Faulty sensor, Corroded connector.

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