Engine-Codes - Isuzu - P0128 Isuzu

P0128 Isuzu Code - Engine Coolant Temperature Below Thermostat Regulating Temperature

- Code Popularity: 19,050 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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|What are the Possible Causes of the Code P0128 Isuzu?

  • 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 Isuzu 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.

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|Code P0128 Isuzu Tech Notes

If cooling system is not leaking and the fluid level is OK, replacing the thermostat usually takes care of the problem.

|What is the Cost to Diagnose the Code P0128 Isuzu?

Labor: 1.0

The cost to diagnose the P0128 Isuzu 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.

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|When is the P0128 Isuzu Code Detected?

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

|What are Code P0128 Isuzu Possible Symptoms?

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

|What Does the P0128 Isuzu Code Mean?

Indicates that the thermostat monitor has not achieved the required engine operating temperature within a specified amount of time after starting the engine.

Engine Coolant Temperature Below Thermostat Regulating Temperature

|Need more Information on the P0128 Isuzu Code?

Need more information on how to fix the P0128 Isuzu code? Get Access to Factory Service Manuals

|Need Help with the P0128 Isuzu Code?

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