Acura B1229: Open in the Sunlight Sensor Circuit

Is your scanner showing Acura B1229?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Acura B1229: Open in the Sunlight Sensor Circuit

OVERVIEW
Severity
:
Medium
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$100-$350
Can I Still Drive?
:
Yes

What Does The Acura B1229 Code Mean?

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

What Are The Potential Causes Of The Acura B1229 Code?

  • Perform the HVAC self-diagnostic function with the HDS
  • (“Open”) in the wires between the Climate Control Unit and the Sunlight Sensor
  • Faulty Sunlight 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:

>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Acura Climate Control Unit
>>> Genuine OEM Honda Acura 80525-T2F-A01 Ambient Temperature Sensor Outside Air

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

Reference Sources

2007-2009 Acura MDX HVAC Climate Control Service Manual for B1229 – Pages 56-58.

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