Engine-Codes - Generic - P1109

P1109 Code - BARO Sensor Circuit Out of Range High

- Code Popularity: 22,405 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents
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What are the Possible Causes of the DTC P1109?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Engine Control Module (ECM) outdated or incorrect software
  • Faulty Engine Control Module (ECM)
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How to Fix the DTC P1109?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P1109 code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Engine rough idle
  • Engine hesitation

What Does the P1109 Code Mean?

The Barometric Pressure (BARO) sensor is built into the Engine Control Module (ECM) and monitors atmospheric pressure. The ECM estimates appropriate intake airflow from the Manifold Absolute Pressure (MAP) sensor output voltage and BARO sensor output voltage. If the BARO sensor output voltage is a specified value or more, the ECM detects a malfunction and a code is stored.

P1109 Code - BARO Sensor Circuit Out of Range High

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Code P1109 Information for Specific Makes

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