Honda B1225: Open in the In-car Temperature Sensor Circuit

Is your scanner showing Honda B1225?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Honda B1225: Open in the In-car Temperature Sensor Circuit

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$100-$250
Can I Still Drive?
:
Yes (Short-term only)

What Does The Honda B1225 Code Mean?

Poor communication between the Temperature Sensor and the Climate Control Unit. (“Open”) condition.

What Are The Potential Causes Of The Honda B1225 Code?

  • Perform the HVAC self-diagnostic function with the HDS
  • Loose wires or poor connections on the in-car temperature sensor circuit
  • “Open” circuit between the Climate Control Unit and the in-car temperature sensor
  • Faulty In-car Temperature Sensor
  • Faulty Climate Control Unit

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> CrocSee 250 Pieces - Car Fuses Assortment Kit
>>> Dorman Remanufactured Climate Control Module
>>> Honda Humidity/In-Car Temperature Sensor

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

Body Electrical Repair Information for B1225 – American Honda Motor, page 88.

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