Engine-CodesGeneric – U1170

U1170 Code - Lost Communications With Driver Door Switch Assembly

Quick Answer

The diagnostic trouble code U1170 indicates that there has been a loss of communication with the driver door switch assembly in the vehicle. Common causes include Faulty driver door switch assembly, Damaged wiring or connectors, Blown fuse related to the driver door switch assembly. 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
U1170 indicates Lost Communications With Driver Door Switch Assembly.
Common causes
Common causes include Faulty driver door switch assembly, Damaged wiring or connectors, Blown fuse related to the driver door switch assembly.
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 U1170 Description

The diagnostic trouble code U1170 indicates that there has been a loss of communication with the driver door switch assembly in the vehicle. This can have several implications for the vehicle's systems and overall performance. The driver door switch assembly is responsible for controlling various functions related to the door, such as the power windows, power locks, and mirror adjustments. When communication with this assembly is lost, it can lead to a range of issues affecting the driver's ability to operate these functions effectively.

OBDII Code U1170 - Lost Communications With Driver Door Switch Assembly
U1170 Code - Lost Communications With Driver Door Switch Assembly

Common Causes of U1170

  1. Faulty driver door switch assembly
  2. Damaged wiring or connectors
  3. Blown fuse related to the driver door switch assembly
  4. Malfunctioning control module responsible for communication with the driver door switch assembly

Symptoms of U1170

  1. Inoperable power windows
  2. Malfunctioning power door locks
  3. Non-responsive mirror adjustments
  4. Warning light on the dashboard indicating a communication issue with the driver door switch assembly

How to Fix U1170

  1. Begin by conducting a visual inspection of the wiring and connectors related to the driver door switch assembly to check for any visible damage or corrosion.
  2. Test the driver door switch assembly using a multimeter to determine if it is functioning correctly. Replace the switch assembly if it is found to be faulty.
  3. Check and replace any blown fuses associated with the driver door switch assembly.
  4. Scan the vehicle's computer system with a diagnostic tool to reset the code and ensure that communication is restored with the driver door switch assembly.
  5. If the issue persists, consult a professional mechanic to further diagnose and repair any underlying electrical issues causing the loss of communication with the driver door switch assembly.

Cost to Fix U1170

The cost of repairing the U1170 code related to lost communication with the driver door switch assembly can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the estimated cost for this repair could range from $100 to $300, including parts and labor. However, it is essential to keep in mind that the actual cost may be higher or lower based on factors such as the location of the repair shop, the make and model of the vehicle, and the complexity of the repair process. Additionally, labor rates at auto repair shops can range from $80 to $150 per hour, with rates potentially higher at dealerships or metropolitan areas and lower at independent shops. It is advisable to obtain multiple quotes and compare prices before proceeding with the repair to ensure a fair and accurate cost estimate.

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Code U1170 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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