Engine-Codes - Generic - P0125

P0125 Code - Insufficient Coolant Temperature for Closed Loop Fuel Control

- Code Popularity: 36,354 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0125?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Low engine coolant level
  • Leaking or stuck open thermostat
  • Faulty Engine Coolant Temperature (ECT) sensor
  • Engine Coolant Temperature sensor harness is open or shorted
  • Engine Coolant Temperature sensor electrical circuit poor connection
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How to Fix the DTC P0125?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0125 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P0125 Code Mean?

The resistance of the engine coolant temperature sensor varies in proportion to the actual engine coolant temperature. The Engine Control Module (ECM)supplies a constant voltage to the sensor and monitors the signal output voltage of the sensor. The signal output voltage varies according to the changing resistance of the sensor. After the engine is started, the engine coolant temperature is monitored by this signal. If the engine coolant temperature sensor indicates that the engine is not yet warm enough for closed-loop fuel control, despite a specified period of time has elapsed since the engine was started, the ECM interprets this as a malfunction in the sensor or cooling system and stores the Diagnostic Trouble Code (DTC).

P0125 Code - Insufficient Coolant Temperature for Closed Loop Fuel Control

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Code P0125 Information for Specific Makes

  • P0125 Acura Engine Coolant Temperature Sensor 1 Malfunction/Slow Response  📷
  • P0125 Audi Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Buick Insufficient Coolant Temperature For Closed Loop Fuel Control
  • P0125 Cadillac Insufficient Coolant Temperature For Closed Loop Fuel Control
  • P0125 Chevrolet Insufficient Coolant Temperature For Closed Loop Fuel Control  
  • P0125 Chrysler Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Dodge Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Ford Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 GMC Insufficient Coolant Temperature For Closed Loop Fuel Control
  • P0125 Honda Engine Coolant Temperature Sensor 1 Malfunction/Slow Response  📷
  • P0125 Hyundai Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Infiniti Engine Coolant Temperature Sensor  📷
  • P0125 Jaguar Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Jeep Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 KIA Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Lexus Insufficient Coolant Temperature for Closed Loop Fuel Control  📷
  • P0125 Lincoln Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Mazda Excessive Time to Enter Closed Loop Fuel Control
  • P0125 Mercedes-Benz Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Mercury Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Mitsubishi Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Nissan Engine Coolant Temperature Sensor  📷
  • P0125 Pontiac Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Saturn Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Scion Insufficient Coolant Temperature for Closed Loop Fuel Control  📷
  • P0125 Subaru Insufficient Coolant Temperature for Closed Loop Fuel Control
  • P0125 Toyota Insufficient Coolant Temperature for Closed Loop Fuel Control  📷
  • P0125 Volkswagen Insufficient Coolant Temperature for Closed Loop Fuel Control

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