AutoCodes – Honda – P0125 2019 Honda CR-V

P0125 2019 Honda CR-V Code - Engine Coolant Temperature Sensor 1 Malfunction/Slow Response

Quick Answer

The Powertrain Control Module (PCM) supplies voltage to the engine coolant temperature signal circuit (about 5 V) through a pull-up resistor. Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) Sensor 1. 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 2019 Honda CR-V indicates Engine Coolant Temperature Sensor 1 Malfunction/Slow Response.
Common causes: Common causes include Low engine coolant level, Leaking or stuck open thermostat, Faulty Engine Coolant Temperature (ECT) Sensor 1.
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 212

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 Aug 03, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0125 2019 Honda CR-V Description

The Powertrain Control Module (PCM) supplies voltage to the engine coolant temperature signal circuit (about 5 V) through a pull-up resistor. As the engine coolant cools, the Engine Coolant Temperature (ECT) Sensor 1 resistance increases and the PCM detects a high signal voltage. As the engine coolant warms, the ECT Sensor 1 resistance decreases, and the PCM detects a low signal voltage. If the ECT Sensor 1 output voltage does not reach a specified temperature at which closed-loop control for stoichiometric air/fuel ratio starts within a set time, depending on the initial engine coolant temperature after starting the engine, the PCM detects a malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0125 2019 Honda CR-V - Engine Coolant Temperature Sensor 1 Malfunction/Slow Response - AutoCodes.com — P0125 2019 Honda CR-V Code - Engine Coolant Temperature Sensor 1 Malfunction/Slow Response

What does this mean?

What are the Possible Causes of the DTC P0125 2019 Honda CR-V?

Low engine coolant level
Leaking or stuck open thermostat
Faulty Engine Coolant Temperature (ECT) Sensor 1
Engine Coolant Temperature Sensor 1 harness is open or shorted
Engine Coolant Temperature Sensor 1 electrical circuit poor connection

How to Fix the DTC P0125 2019 Honda CR-V?

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 2019 Honda CR-V 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 2019 Honda CR-V code?

Need more information on how to fix the P0125 2019 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0125 2019 Honda CR-V code diagnosed by a professional: Find a repair shop in your area

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 2019 Honda CR-V Code

1. What are the common symptoms of OBDII code P0125 on a 2019 Honda CR-V?

- Common symptoms include the Check Engine light coming on, poor fuel economy, engine overheating, and potential rough idling.

2. What does OBDII code P0125 indicate on a 2019 Honda CR-V?

- OBDII code P0125 indicates a malfunction or slow response from the Engine Coolant Temperature Sensor 1 in the engine's cooling system.

3. What are the possible causes of OBDII code P0125 on a 2019 Honda CR-V?

- Possible causes include a faulty engine coolant temperature sensor, a stuck-open thermostat, low coolant levels, or issues with the cooling system.

4. How can I diagnose the cause of OBDII code P0125 on my 2019 Honda CR-V?

- Diagnose by checking the coolant level, inspecting the coolant temperature sensor and its wiring, testing the thermostat, and ensuring the cooling system is functioning properly.

5. Can I continue driving my 2019 Honda CR-V with OBDII code P0125 active?

- It is not recommended to drive with the P0125 code active as it can lead to engine overheating and potentially cause more severe damage.

6. How can I repair OBDII code P0125 on my 2019 Honda CR-V?

- Repair options include replacing the engine coolant temperature sensor, fixing any cooling system issues, replacing the thermostat, and clearing the error code.

7. Will resetting the Check Engine light resolve OBDII code P0125 on my 2019 Honda CR-V?

- Resetting the Check Engine light may temporarily clear the code, but the underlying issue causing P0125 needs to be diagnosed and repaired to prevent it from recurring.

8. Is it possible to prevent OBDII code P0125 from appearing in my 2019 Honda CR-V?

- Regular maintenance of the cooling system, replacing coolant as recommended, checking the thermostat, and promptly addressing any cooling system issues can help prevent P0125.

9. How long does it typically take to repair OBDII code P0125 on a 2019 Honda CR-V?

- The repair time for P0125 can vary depending on the exact cause, but it may take anywhere from 30 minutes to a few hours to diagnose and fix the issue.

10. Can a DIY enthusiast tackle the repair for OBDII code P0125 on a 2019 Honda CR-V?

- Depending on the individual's skill level, diagnosing and replacing the engine coolant temperature sensor or thermostat can be possible for a DIY enthusiast, but more complex issues may require professional help.