AutoCodes – Generic – B1227

B1227 Code - Open In The Outside Air Temperature Sensor Circuit

Quick Answer

The Climate Control Unit monitors the Outside Air Temperature Sensor. Common causes include Faulty Outside Air Temperature Sensor, Outside Air Temperature Sensor harness is open or shorted, Outside Air Temperature Sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1227 indicates Open In The Outside Air Temperature Sensor Circuit.
Common causes: Common causes include Faulty Outside Air Temperature Sensor, Outside Air Temperature Sensor harness is open or shorted, Outside Air Temperature Sensor circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 28,190

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1227 Description

The Climate Control Unit monitors the Outside Air Temperature Sensor. The Climate Control Unit sets the OBDII code when the Outside Air Temperature Sensor is not to factory specifications.

OBDII Code B1227 - Open In The Outside Air Temperature Sensor Circuit - AutoCodes.com — B1227 Code - Open In The Outside Air Temperature Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC B1227?

Faulty Outside Air Temperature Sensor
Outside Air Temperature Sensor harness is open or shorted
Outside Air Temperature Sensor circuit poor electrical connection
Faulty Climate Control Unit

How to Fix the DTC B1227?

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 B1227 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 B1227 code?

Need more information on how to fix the B1227 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1227 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1227 Acura — Open In The Outside Air Temperature Sensor Circuit
B1227 Honda — Open In The Outside Air Temperature Sensor Circuit

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 B1227 Code

1. What does the OBDII code B1227 mean?

B1227 indicates an open circuit in the outside air temperature sensor, meaning the sensor is not properly communicating with the vehicleâ€™s control module.

2. What are the symptoms of OBDII code B1227?

Common symptoms include inaccurate or no outside temperature readings on the dashboard and potential issues with systems that rely on temperature data, such as climate control.

3. What causes the B1227 code to appear?

The most common causes are a damaged or disconnected outside air temperature sensor, corroded wiring, or a faulty electrical connection in the circuit.

4. Can I still drive with a B1227 code?

Yes, you can still drive, but systems like automatic climate control may not function correctly, and itâ€™s best to address the issue to avoid further complications.

5. How is the B1227 code diagnosed?

A technician will inspect the outside air temperature sensor, wiring, and connectors for damage or disconnection, and use a multimeter to check for proper voltage or resistance in the circuit.

6. How do you fix the B1227 code?

Repairs typically involve reconnecting or replacing the outside air temperature sensor, repairing damaged wiring, or cleaning corroded connectors.

7. Where is the outside air temperature sensor located?

The sensor is usually located at the front of the vehicle, near the grille or bumper, where it can measure external air temperature.

8. Can a faulty outside air temperature sensor affect other systems?

Yes, it can impact systems like the automatic climate control and, in some cases, engine management if temperature data is used for certain calculations.

9. How much does it cost to fix a B1227 code?

Repair costs can range from $50 to $200, depending on whether the sensor, wiring, or connectors need replacement or repair.

10. Can I fix the B1227 code myself?

If you have basic automotive knowledge, you can inspect and replace the sensor or repair visible wiring damage. However, more complex electrical diagnostics may require professional assistance.