AutoCodes – Infiniti – P0125 2005 Infiniti G35

P0125 2005 Infiniti G35 Code - Engine Coolant Temperature Sensor

Quick Answer

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) sensor. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0125 2005 Infiniti G35 indicates Engine Coolant Temperature Sensor.
Common causes: Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) sensor.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 5,414

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 08, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0125 2005 Infiniti G35 Description

The Engine Coolant Temperature (ECT) sensor is used to detect the engine coolant temperature. The sensor modifies a voltage signal from the Engine Control Module (ECM). The modified signal returns to the ECM 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.

OBDII Code P0125 2005 Infiniti G35 - Engine Coolant Temperature Sensor - AutoCodes.com — P0125 2005 Infiniti G35 Code - Engine Coolant Temperature Sensor

What does this mean?

What are the Possible Causes of the DTC P0125 2005 Infiniti G35?

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

How to Fix the DTC P0125 2005 Infiniti G35?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0125 2005 Infiniti G35 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0125 2005 Infiniti G35 code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0125 2005 Infiniti G35 Code

1. What are the common symptoms of OBDII code P0125 on a 2005 Infiniti G35?

The common symptoms of code P0125 on a 2005 Infiniti G35 include the check engine light coming on, poor fuel economy, and potential overheating of the engine.

2. What does the OBDII code P0125 indicate on a 2005 Infiniti G35?

Code P0125 on a 2005 Infiniti G35 indicates a problem with the Engine Coolant Temperature Sensor or the thermostat.

3. What are the possible causes of OBDII code P0125 on a 2005 Infiniti G35?

Possible causes of code P0125 on a 2005 Infiniti G35 include a faulty Engine Coolant Temperature Sensor, a malfunctioning thermostat, low coolant levels, or a wiring issue.

4. How can I diagnose the Engine Coolant Temperature Sensor on a 2005 Infiniti G35?

To diagnose the Engine Coolant Temperature Sensor on a 2005 Infiniti G35, you can use an OBDII scanner to read the code, visually inspect the sensor and its connections, and test the sensor's resistance with a multimeter.

5. What is the typical repair for OBDII code P0125 on a 2005 Infiniti G35?

The typical repair for code P0125 on a 2005 Infiniti G35 involves replacing the Engine Coolant Temperature Sensor or the thermostat, depending on which component is determined to be faulty.

6. Can I continue driving my 2005 Infiniti G35 with OBDII code P0125?

It is not recommended to continue driving your 2005 Infiniti G35 with code P0125, as it can lead to engine overheating and potential damage. It is best to address the issue promptly.

7. How long does it take to repair OBDII code P0125 on a 2005 Infiniti G35?

The repair time for code P0125 on a 2005 Infiniti G35 can vary depending on the exact cause of the issue, but typically it can be resolved within a few hours by a qualified mechanic.

8. Can a DIY enthusiast fix OBDII code P0125 on a 2005 Infiniti G35?

A DIY enthusiast with the necessary tools and knowledge can potentially fix code P0125 on a 2005 Infiniti G35 by replacing the Engine Coolant Temperature Sensor or thermostat themselves.

9. Are there any preventive measures to avoid OBDII code P0125 on a 2005 Infiniti G35?

To prevent OBDII code P0125 on a 2005 Infiniti G35, it is recommended to perform regular maintenance on the cooling system, including checking coolant levels, replacing coolant as needed, and inspecting the Engine Coolant Temperature Sensor.

10. What is the cost of repairing OBDII code P0125 on a 2005 Infiniti G35?

The cost of repairing code P0125 on a 2005 Infiniti G35 can vary depending on the exact cause of the issue, but it typically ranges from $100 to $300 for parts and labor.