Acura P1109: Barometric Pressure (BARO) Sensor Circuit Out of Range High

Is your scanner showing Acura P1109?
No worries. We'll show you what it means and how to deal with it.

Presented by
Randy Worner

Acura P1109: Barometric Pressure (BARO) Sensor Circuit Out of Range High

OVERVIEW
Severity
:
High
DIY Difficulty Level
:
Intermediate
Repair Cost
:
$200-$300
Can I Still Drive?
:
Yes

What Does The Acura P1109 Code Mean?

The BARO sensor output voltage is between 3.59 V to 4.49 V for at least 2 seconds. The execution time is continuous and DTCs P2228, P2229 are not active.

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.

What Are The Potential Causes Of The Acura P1109 Code?

  • PCM needs to be updated with the latest software
  • Faulty PCM

Recommended Parts

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

>>> Acura Engine Control Module
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit

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

Reference Sources

Acura P1109, DTCDECODE.

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