AutoCodes – Generic – U11F9

U11F9 Code - Engine Did Not Respond To Adaptive Cruise Control Torque Request

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Module detects that the Powertrain Control Module is not responding to Adaptive Cruise Control (ACC) Module torque request. Common causes include Check for Body Control Module (BCM) codes, Faulty Powertrain Control Module (PCM). 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
U11F9 indicates Engine Did Not Respond To Adaptive Cruise Control Torque Request.
Common causes
Common causes include Check for Body Control Module (BCM) codes, Faulty Powertrain Control Module (PCM).
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,998
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 03, 2020
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Code U11F9 Description

The Diagnostic Trouble Code (DTC) sets when the Module detects that the Powertrain Control Module is not responding to Adaptive Cruise Control (ACC) Module torque request.
OBDII Code U11F9 - Engine Did Not Respond To Adaptive Cruise Control Torque Request - AutoCodes.com
U11F9 Code - Engine Did Not Respond To Adaptive Cruise Control Torque Request

What are the Possible Causes of the DTC U11F9?

  • Check for Body Control Module (BCM) codes
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC U11F9?

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 U11F9 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 U11F9 code?

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Need Help with the Code?

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Information for Specific Makes

  • U11F9 Chrysler β€” Engine Did Not Respond To Adaptive Cruise Control Torque Request
  • U11F9 Dodge β€” Engine Did Not Respond To Adaptive Cruise Control Torque Request
  • U11F9 Fiat β€” Engine Did Not Respond To Adaptive Cruise Control Torque Request
  • U11F9 Jeep β€” Engine Did Not Respond To Adaptive Cruise Control Torque Request
  • U11F9 RAM β€” Engine Did Not Respond To Adaptive Cruise Control Torque Request
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 U11F9 Code

1. What are the common symptoms of OBDII code U11F9?

The common symptoms of OBDII code U11F9 include the adaptive cruise control system not working properly, the engine failing to respond to torque requests from the cruise control system, and possible issues with vehicle acceleration and speed control.

2. What are the possible causes of OBDII code U11F9?

Possible causes of OBDII code U11F9 can include faults in the adaptive cruise control system, issues with the engine control module (ECM), wiring problems, sensor malfunctions, or mechanical issues affecting the engine's response to torque requests.

3. How do I diagnose OBDII code U11F9?

Diagnosing OBDII code U11F9 involves using a diagnostic scanner to retrieve the code, checking for any other related trouble codes, inspecting the adaptive cruise control system components, testing the engine response to torque requests, and performing a thorough inspection of wiring and sensors.

4. Can OBDII code U11F9 be fixed easily?

Fixing OBDII code U11F9 may not always be easy, as it requires proper diagnosis of the underlying issue causing the engine to not respond to adaptive cruise control torque requests. The complexity of the repair will depend on the specific cause of the problem.

5. Are there any DIY repair tips for OBDII code U11F9?

DIY repair for OBDII code U11F9 may be challenging due to the technical nature of the adaptive cruise control system and engine response issues. It is recommended to consult a professional mechanic or dealership for accurate diagnosis and repair.

6. Can driving with OBDII code U11F9 cause further damage to the vehicle?

Continuing to drive with OBDII code U11F9 may result in poor performance of the adaptive cruise control system, potential safety hazards due to the engine not responding to torque requests, and could lead to further damage if the underlying issue is not addressed promptly.

7. How much does it cost to repair OBDII code U11F9?

The cost of repairing OBDII code U11F9 can vary depending on the cause of the issue, labor rates in your area, and the specific components that need to be repaired or replaced. It is advisable to obtain quotes from different repair shops for an accurate estimate.

8. Is it safe to ignore OBDII code U11F9?

Ignoring OBDII code U11F9 is not recommended, as it can lead to potential safety risks and further damage to the vehicle. It is best to address the underlying issue causing the engine not to respond to adaptive cruise control torque requests as soon as possible.

9. Can a faulty sensor trigger OBDII code U11F9?

Yes, a faulty sensor related to the adaptive cruise control system or engine control module can trigger OBDII code U11F9. It is essential to diagnose the specific sensor causing the issue to accurately repair the problem.

10. How long does it take to repair OBDII code U11F9?

The repair time for OBDII code U11F9 can vary depending on the cause of the issue, availability of parts, and the complexity of the repair. Some repairs may be completed in a few hours, while others may take longer if extensive diagnostics or component replacements are needed.

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