Engine-CodesGeneric – U1190

U1190 Code - Lost Communications With Humidity Sensor

Quick Answer

The U1190 code indicates that there is a communication problem between the vehicle's control module and the humidity sensor. Common causes include Faulty humidity sensor, Damaged wiring or connectors between the sensor and control module, Malfunctioning control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U1190 indicates Lost Communications With Humidity Sensor.
Common causes
Common causes include Faulty humidity sensor, Damaged wiring or connectors between the sensor and control module, Malfunctioning control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code U1190 Description

The U1190 code indicates that there is a communication problem between the vehicle's control module and the humidity sensor. The humidity sensor is responsible for detecting the moisture levels in the environment and providing this information to the control module for various functions such as adjusting the climate control system, preventing fogging on windows, and optimizing fuel efficiency.

OBDII Code U1190 - Lost Communications With Humidity Sensor
U1190 Code - Lost Communications With Humidity Sensor

Common Causes of U1190

  1. Faulty humidity sensor.
  2. Damaged wiring or connectors between the sensor and control module.
  3. Malfunctioning control module.
  4. Corrosion or moisture damage affecting sensor communication.
  5. Electrical issues within the vehicle's system.

Symptoms of U1190

  1. Inconsistent climate control settings or inability to adjust temperature.
  2. Persistent fogging on windows, even when climate control is on.
  3. Decreased fuel efficiency and potentially higher fuel consumption.
  4. Check Engine Light illuminated on the dashboard.

How to Fix U1190

  1. Diagnose the issue using a diagnostic scanner to confirm the U1190 code and identify the specific cause.
  2. Inspect the humidity sensor, wiring, and connectors for any visible damage or corrosion. Replace any faulty components.
  3. Test the communication between the sensor and control module to ensure proper functionality.
  4. Clear the fault code from the vehicle's system and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, further troubleshooting may be necessary, involving advanced diagnostics or professional assistance.

Cost to Fix U1190

The typical repair costs for addressing a U1190 code can range from $100 to $300, depending on the specific cause of the issue and the labor rates at the repair shop. Parts such as a new humidity sensor or wiring harness may need to be purchased, in addition to labor costs for the diagnosis and repair process. It is recommended to consult with a trusted mechanic or dealership to get an accurate estimate based on the vehicle's make and model. Keep in mind that additional costs for diagnostic time and other factors may apply, so it's essential to inquire about all potential expenses upfront.

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Code U1190 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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