Engine-Codes - Ford - P0118 2003 FORD F150

P0118 2003 FORD F150 Code - Engine Coolant Temperature Sensor Circuit High

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3
Table of contents

|P0118 2003 FORD F150 code possible causes

  • Low engine coolant level
  • Faulty engine coolant thermostat
  • Faulty Engine Coolant Temperature (ECT) Sensor or Cylinder Head Temperature (CHT) Sensor
  • Engine Coolant Temperature Sensor or Cylinder Head Temperature Sensor harness is open or shorted
  • Engine Coolant Temperature Sensor or Cylinder Head Temperature Sensor circuit poor electrical connection

|How is the P0118 2003 FORD F150 code repair?

Start by checking 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.

|P0118 2003 FORD F150 code tech notes

Start by checking for coolant leaks, and if there are no leaks, the thermostat might be stuck closed and needs replacement. If the problem persists, change the Engine Coolant Temperature (ECT) sensor.

|What is the cost to diagnose the P0118 2003 FORD F150 code

Labor: 1.0

The cost to diagnose the P0118 2003 FORD F150 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0118 2003 FORD F150 code possible symptoms?

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

|What is P0118 2003 FORD F150 code meaning?

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Powertrain Control Module (PCM). The modified signal returns to the PCM as the engine coolant temperature input. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases. The Diagnostic Trouble Code (DTC) indicates the sensor signal is greater than the self-test maximum. The ECT sensor maximum is 4.6 volts or -50°C (-58°F).

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