P1116 - Engine Coolant Temperature Sensor Out of Self-Test Range

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3    What is this?
Table of contents

P1116 Possible Causes

  • Low Engine Coolant Level
  • Faulty Engine Coolant Temperature (ECT) sensor
  • Engine Coolant Temperature (ECT) sensor harness is open or shorted
  • Engine Coolant Temperature (ECT) sensor electrical circuit poor connection
  • Faulty Engine Coolant Thermostat
  • Damaged Powertrain Control Module (PCM)

How do I fix code P1116?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the P1116 code

Labor: 1.0

The cost of diagnosing the P1116 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine Overheating

P1116 Description

The Engine Coolant Temperature (ECT) Sensor is a thermistor device in which resistance changes with temperature. The electrical resistance of a thermistor decreases as the temperature increases, and the resistance increases as the temperature decreases. The varying resistance changes the voltage drop across the sensor terminals and provides electrical signals to the Powertrain Control Module (PCM) corresponding to temperature.
Thermistor-type sensors are considered passive sensors. A passive sensor is connected to a voltage divider network so varying the resistance of the passive sensor causes a variation in total current flow. Voltage that is dropped across a fixed resistor (pull-up resister) in series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor.
The ECT measures the temperature of the engine coolant. The PCM uses the ECT input for fuel control and for cooling fan control. There are 3 types of ECT sensors; threaded, push-in, and twist-lock. The ECT sensor is located in an engine coolant passage.
OBDII Code P1116 - Engine Coolant Temperature Sensor Out of Self-Test Range - AutoCodes.com

More Information

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Information for specific makes

  • P1116 ACURA Engine Coolant Temperature Sensor Performance Problem
  • P1116 AUDI HO2S Sensor Heater Circuit Open Bank 1 Sensor 1
  • P1116 BMW Mass Or Volume Air Flow Circuit Range/Performance Problem Bank 2
  • P1116 BUICK Engine Coolant Temperature Sensor Signal Unstable Or Intermittent
  • P1116 CADILLAC Engine Coolant Temperature Sensor Signal Unstable Or Intermittent
  • P1116 CHEVROLET Engine Coolant Temperature Sensor Signal Unstable Or Intermittent
  • P1116 FORD Engine Coolant Temperature Sensor is Out of Self-Test Range
  • P1116 GMC Engine Coolant Temperature Sensor Signal Unstable Or Intermittent
  • P1116 HONDA Engine Coolant Temperature Sensor Performance Problem
  • P1116 HYUNDAI Boost Pressure Sensor Malfunction
  • P1116 LEXUS Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
  • P1116 LINCOLN Engine Coolant Temperature Sensor is Out of Self-Test Range
  • P1116 MAZDA Engine Coolant Temperature Sensor is Out of Self-Test Range
  • P1116 MERCURY Engine Coolant Temperature Sensor is Out of Self-Test Range
  • P1116 MINI Mass Or Volume Air Flow Circuit Range/Performance Problem Bank 2
  • P1116 SCION Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
  • P1116 SUBARU Engine Torque Control Cut Signal Circuit Low Input
  • P1116 SUZUKI Engine Coolant Temperature Circuit Performance At Engine Soaking
  • P1116 TOYOTA Coolant Temperature Sensor Circuit Stack for Coolant Heat Storage System
  • P1116 VOLKSWAGEN HO2S Sensor Heater Circuit Open Bank 1 Sensor 1

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