Engine-Codes - Ford - P0128 2002 FORD F150

P0128 2002 FORD F150 Code - Coolant Thermostat Coolant Temp Below Thermostat Regulating Temperature

- Code Popularity: 4,279 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the P0128 2002 FORD F150 Code?

  • Leaking or stuck open thermostat
  • Low engine coolant level
  • Insufficient warm up time
  • Faulty engine coolant temperature sensor
  • Engine coolant temperature sensor harness is open or shorted
  • Engine coolant temperature sensor circuit poor electrical connection

|How to Fix the P0128 2002 FORD F150 Code?

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.

|P0128 2002 FORD F150 code tech notes

If cooling system is not leaking and the fluid level is OK, replacing the thermostat usually takes care of the problem.
Indicates that the Thermostat Monitor has not achieved the required engine operating temperature level within a specified amount of time after starting the engine.

|What is the cost to diagnose the P0128 2002 FORD F150 code?

Labor: 1.0

The cost to diagnose the P0128 2002 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.

|When is the P0128 2002 FORD F150 code detected?

The engine coolant temperature does not reach to specified temperature even though the engine has run long enough.

|What are P0128 2002 FORD F150 code possible symptoms?

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

|What Does the P0128 2002 FORD F150 Code Mean?

Coolant thermostat (coolant temperature below thermostat regulating temperature). Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine.

Coolant Thermostat Coolant Temp Below Thermostat Regulating Temperature

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