How to Fix B1250 Air Temperature Internal Sensor Circuit Failure

Introduction

If you’re experiencing issues with your car’s air temperature, it could be due to a B1250 air temperature internal sensor circuit failure. This can be a frustrating problem to deal with, but fortunately, it’s something that can be fixed with a little bit of know-how. In this article, we’ll walk you through the steps you need to take to fix this issue and get your car’s air temperature back to normal.

What is B1250 Air Temperature Internal Sensor Circuit Failure?

B1250 is a diagnostic trouble code (DTC) that indicates a problem with the air temperature internal sensor circuit. This sensor is responsible for measuring the temperature of the air that’s flowing into your car’s engine. When this sensor fails, it can cause a number of issues, including problems with your car’s air conditioning system.

Step-by-Step Guide to Fixing B1250 Air Temperature Internal Sensor Circuit Failure

Step 1: Locate the Sensor

The first step in fixing this issue is to locate the air temperature internal sensor. This sensor is typically located near the air intake system, which is usually located near the front of the engine compartment. Consult your car’s owner’s manual or a repair manual to find the exact location of the sensor.

Step 2: Remove the Sensor

Once you’ve located the sensor, you’ll need to remove it from your car. This can typically be done using a socket wrench or pliers. Be sure to disconnect any electrical connections before removing the sensor.

Step 3: Inspect the Sensor

Once you’ve removed the sensor, inspect it for any signs of damage or wear. If the sensor is damaged, you’ll need to replace it with a new one. If it appears to be in good condition, you can move on to the next step.

Step 4: Test the Sensor

To test the sensor, you’ll need a multimeter. Set the multimeter to measure resistance and touch the probes to the sensor’s terminals. The resistance should be within the range specified in your car’s owner’s manual or repair manual. If the resistance is outside of this range, you’ll need to replace the sensor.

Step 5: Replace the Sensor

If the sensor is damaged or the resistance is outside of the specified range, you’ll need to replace the sensor. Install the new sensor in the same location as the old one and reconnect any electrical connections.

Tips for Preventing B1250 Air Temperature Internal Sensor Circuit Failure

To prevent this issue from occurring in the future, it’s important to keep your car’s air intake system clean and free of debris. Regularly inspect the air filter and replace it as needed. Additionally, be sure to follow your car’s recommended maintenance schedule to ensure that all components are in good working order.

Conclusion

Fixing a B1250 air temperature internal sensor circuit failure may seem daunting, but with the right tools and knowledge, it’s something that can be done at home. By following the steps outlined in this article, you can get your car’s air temperature back to normal and prevent this issue from occurring in the future.

FAQs

1. Can I drive my car with a B1250 air temperature internal sensor circuit failure?

While it’s technically possible to drive your car with this issue, it’s not recommended. A faulty air temperature sensor can cause a number of issues, including poor fuel economy and reduced engine performance.

2. How much does it cost to fix a B1250 air temperature internal sensor circuit failure?

The cost of fixing this issue can vary depending on the make and model of your car, as well as the severity of the problem. In general, you can expect to pay anywhere from $100 to $500 for parts and labor.

3. Can I fix a B1250 air temperature internal sensor circuit failure myself?

While it’s possible to fix this issue yourself, it’s important to have the right tools and knowledge. If you’re not comfortable working on your car’s engine, it’s best to leave this job to a professional mechanic.