B1231 Honda Code - Open In The Evaporator Temperature Sensor Circuit
Quick Answer
The Climate Control Unit monitors the Evaporator Temperature Sensor. Common causes include Faulty Evaporator Temperature Sensor, Evaporator Temperature Sensor harness is open or shorted, Evaporator 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
- B1231 Honda indicates Open In The Evaporator Temperature Sensor Circuit.
- Common causes
- Common causes include Faulty Evaporator Temperature Sensor, Evaporator Temperature Sensor harness is open or shorted, Evaporator 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.
Code B1231 Honda Description
What are the Possible Causes of the DTC B1231 Honda?
- Faulty Evaporator Temperature Sensor
- Evaporator Temperature Sensor harness is open or shorted
- Evaporator Temperature Sensor circuit poor electrical connection
- Faulty Climate Control Unit
How to Fix the DTC B1231 Honda?
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 B1231 Honda 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 B1231 Honda code?
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Need Help with the Code?
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Frequently Asked Questions about B1231 Honda Code
1. What are the common symptoms of OBDII code B1231 in a Honda related to an open in the evaporator temperature sensor circuit?
The common symptoms include issues with the air conditioning system such as inconsistent cooling or the AC not functioning properly.
2. What could cause the OBDII code B1231 in a Honda indicating an open in the evaporator temperature sensor circuit?
Possible causes include a faulty evaporator temperature sensor, damaged wiring or connectors in the sensor circuit, or a problem with the HVAC control module.
3. How can I diagnose the OBDII code B1231 in my Honda for an open in the evaporator temperature sensor circuit?
Diagnosis typically involves checking the wiring and connectors for any damage, testing the evaporator temperature sensor for proper functionality, and using a diagnostic scan tool to read the code and reset it for further testing.
4. Can I repair the open in the evaporator temperature sensor circuit causing OBDII code B1231 in my Honda myself?
If you have the necessary tools and experience working with automotive electrical systems, you may be able to repair the issue yourself by replacing the faulty sensor, repairing damaged wiring, or addressing connector issues.
5. Are there any specific tips to keep in mind when repairing OBDII code B1231 related to an open in the evaporator temperature sensor circuit in a Honda?
Ensure you have a wiring diagram for your specific Honda model, use proper safety precautions when working with electrical components, and double-check your repairs before resetting the code and testing the system.
6. How critical is it to address the OBDII code B1231 for an open in the evaporator temperature sensor circuit in a Honda?
While the vehicle may still be operable with this issue, it is important to address it promptly to prevent further damage to the air conditioning system and ensure optimal performance and efficiency.
7. Can a malfunctioning evaporator temperature sensor cause other problems in a Honda besides triggering OBDII code B1231?
Yes, a faulty evaporator temperature sensor can lead to incorrect temperature readings, affecting the overall performance of the HVAC system and potentially impacting fuel efficiency.
8. Is it safe to drive my Honda with OBDII code B1231 indicating an open in the evaporator temperature sensor circuit?
It is generally safe to drive the vehicle with this code, but it is recommended to address the issue as soon as possible to avoid potential discomfort from the air conditioning not functioning properly.
9. How much does it typically cost to repair OBDII code B1231 related to an open in the evaporator temperature sensor circuit in a Honda?
The cost can vary depending on the specific repairs needed, but it may involve expenses for parts such as the evaporator temperature sensor and labor if you choose to have a professional mechanic fix the issue.
10. Can resetting the OBDII code B1231 on my Honda resolve the issue temporarily?
While resetting the code may temporarily clear the warning, it is essential to diagnose and repair the root cause of the problem to ensure the issue does not reoccur.
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