ShopBaseFree forever shop management software for auto repair shops
Try ShopBase Free →
Home/DTC Codes/Fiat/Cronos/2018-2025 1.0L I4 Flex Firefly/P0115
P0115

Engine Coolant Temperature (ECT) Sensor 1 Circuit

2018-2025 Fiat Cronos 1.0L I4 Flex Firefly

Moderate SeverityPowertrainGeneric (SAE)

Description

General malfunction in the engine coolant temperature sensor circuit.

Symptoms

  • Check Engine Light
  • Poor fuel economy
  • Hard starting
  • Incorrect temp gauge reading
  • Fans not operating correctly

Common Causes

  • Faulty ECT sensor
  • Wiring damage
  • Corroded connector
  • Low coolant level

Diagnostic Steps

  1. Test ECT resistance at known temperature
  2. Inspect wiring
  3. Check coolant level
  4. Compare ECT to IAT at cold start

Repair Notes

Replace ECT sensor or repair wiring. Verify coolant level.

Related Codes

P0116ECT Sensor 1 Circuit Range/PerformanceP0117ECT Sensor 1 Circuit Low InputP0118ECT Sensor 1 Circuit High InputP0119ECT Sensor 1 Circuit IntermittentP0125Insufficient Coolant Temperature for Closed Loop Fuel Control

Other Powertrain Codes

P0115 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 P0115 mean on a 2018-2025 Fiat Cronos?

P0115 stands for "Engine Coolant Temperature (ECT) Sensor 1 Circuit". General malfunction in the engine coolant temperature sensor circuit.

What are the symptoms of P0115 on a Fiat Cronos?

Common symptoms of P0115 include: Check Engine Light, Poor fuel economy, Hard starting, Incorrect temp gauge reading, Fans not operating correctly.

What causes P0115 on a 2018-2025 Fiat Cronos?

Common causes of P0115 include: Faulty ECT sensor, Wiring damage, Corroded connector, Low coolant level.

View Labor Times | View Torque Specs | View Fluid Specs