AutoCodes – Generic – U1191

U1191 Code - Lost Communication With Upper Switch Bank

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Cluster does not receive information from the Upper Switch Bank. Common causes include Faulty Upper Switch Bank, Upper Switch Bank harness is open or shorted, Upper Switch Bank circuit poor electrical connection. 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: U1191 indicates Lost Communication With Upper Switch Bank.
Common causes: Common causes include Faulty Upper Switch Bank, Upper Switch Bank harness is open or shorted, Upper Switch Bank circuit poor electrical connection.
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.

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Code Popularity 7,535

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1191 Description

The Diagnostic Trouble Code (DTC) sets when the Cluster does not receive information from the Upper Switch Bank.

OBDII Code U1191 - Lost Communication With Upper Switch Bank - AutoCodes.com — U1191 Code - Lost Communication With Upper Switch Bank

What does this mean?

What are the Possible Causes of the DTC U1191?

Faulty Upper Switch Bank
Upper Switch Bank harness is open or shorted
Upper Switch Bank circuit poor electrical connection
Faulty Cluster

How to Fix the DTC U1191?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1191 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the U1191 code?

Need more information on how to fix the U1191 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1191 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U1191 Chrysler — Lost Communication With Upper Switch Bank
U1191 Dodge — Lost Communication With Upper Switch Bank
U1191 Jeep — Lost Communication With Upper Switch Bank
U1191 RAM — Lost Communication With Upper Switch Bank

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.

Frequently Asked Questions about U1191 Code

1. What are the common symptoms of OBDII code U1191 (Lost Communication With Upper Switch Bank)?

- Common symptoms include non-functioning switches on the upper switch bank, such as window controls, mirror adjustments, or other vehicle functions controlled from that area.

2. What are the possible causes of OBDII code U1191?

- The code U1191 is typically caused by a faulty upper switch bank module, damaged wiring, loose connections, or a communication error within the vehicle's network.

3. How can I diagnose the issue related to code U1191?

- To diagnose the issue, you can start by checking the upper switch bank for physical damage or malfunctions. Then, inspect the wiring and connections related to the switch bank and perform a scan using a compatible OBDII scanner.

4. Can a DIY enthusiast repair OBDII code U1191 at home?

- Repairing code U1191 at home may be possible for those with intermediate automotive repair skills. However, it is recommended to consult a professional for accurate diagnosis and repair to avoid further complications.

5. Is it safe to continue driving with OBDII code U1191 unresolved?

- It is generally safe to drive with the U1191 code, but you may experience inconvenience due to non-functioning switches. It is advised to address the issue promptly to ensure all vehicle functions are operational.

6. How much does it typically cost to repair OBDII code U1191?

- The cost of repairing code U1191 can vary depending on the specific cause of the issue. Costs may include parts replacement, labor fees, and diagnostic charges, so it's best to get a quote from a trusted mechanic.

7. Can weather conditions affect the occurrence of code U1191?

- Extreme weather conditions, such as temperature fluctuations or moisture, can potentially impact the electrical components associated with the upper switch bank and contribute to the U1191 code.

8. Are there any preventive measures to avoid OBDII code U1191 in the future?

- Keeping the upper switch bank and its wiring well-maintained, avoiding exposure to water or extreme temperatures, and periodically checking for any signs of wear can help prevent issues leading to code U1191.

9. Will resetting the OBDII system clear code U1191 permanently?

- Resetting the OBDII system may temporarily clear the U1191 code, but if the underlying issue persists, the code is likely to return. It's crucial to address the root cause of the problem for a permanent solution.

10. Can code U1191 be related to other system malfunctions in the vehicle?

- While U1191 specifically points to a communication issue with the upper switch bank, it's possible that related electrical problems or network communication errors could trigger this code as well.