Hyundai B1233: In-Car Temperature Sensor Short (Low)

Is your scanner showing Hyundai B1233?
No worries. We'll show you what it means and how to deal with it.

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OBDCodex, Editor

Hyundai B1233: In-Car Temperature Sensor Short (Low)

DIY Difficulty Level
Repair Cost
Can I Still Drive?
Yes (Short-term only)

What Does The Hyundai B1233 Code Mean?

The ECM sets DTC B1233 if there is a short circuit in incar temp sensor signal harness or the measured voltage value of the sensor is less than the threshold value (0.1V).

What Are The Potential Causes Of The Hyundai B1233 Code?

  • Short circuit in harness
  • Faulty incar temp. sensor
  • Faulty A/C 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
>>> Carquest Premium - Humidity Sensor
>>> Car A/C & Heater Controls

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

Reference Sources

Heating, Ventilation and Air Conditioning Repair Information for B1233 – Pages 125-129.

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