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Home/DTC Codes/Mitsubishi/Eclipse/2000-2012 2.4L I4/P0115
P0115

Engine Coolant Temperature (ECT) Sensor 1 Circuit

2000-2012 Mitsubishi Eclipse 2.4L I4 🇩🇪

Moderate SeverityPowertrain

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

Mitsubishi 3000GT

1991-1999 3.0L V6

Mitsubishi 3000GT VR-4

1991-1999 3.0L Twin Turbo V6

Mitsubishi 3000GT VR-4

1991-1999 3.0L V6 Twin Turbo

Mitsubishi Colt JP

2002-2012 1.3L I4 4A90

Mitsubishi Colt JP

2002-2012 1.5L I4 4A91

Mitsubishi Delica D:5

2019-2025 2.2L I4 Turbo Diesel 4N14

Mitsubishi Diamante

1992-1996 3.0L V6

Mitsubishi Diamante

1997-2004 3.5L V6

Common Questions

What does code P0115 mean on a 2000-2012 Mitsubishi Eclipse?

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 Mitsubishi Eclipse?

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 2000-2012 Mitsubishi Eclipse?

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

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