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

Quick Answer

The diagnostic trouble code (DTC) U11F9 indicates that the engine control module (ECM) did not respond appropriately to a torque request from the adaptive cruise control (ACC) system. Common causes include Faulty throttle body or electronic throttle control (ETC) system, Wiring issues or damaged connectors between the ECM and the ACC system, Malfunctioning sensors, such as the vehicle speed sensor or throttle position sensor. 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 Dodge indicates Engine Did Not Respond To Adaptive Cruise Control Torque Request.
Common causes
Common causes include Faulty throttle body or electronic throttle control (ETC) system, Wiring issues or damaged connectors between the ECM and the ACC system, Malfunctioning sensors, such as the vehicle speed sensor or throttle position sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 24, 2024
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Code U11F9 Dodge Description

The diagnostic trouble code (DTC) U11F9 indicates that the engine control module (ECM) did not respond appropriately to a torque request from the adaptive cruise control (ACC) system. Adaptive cruise control is designed to automatically adjust the vehicle's speed to maintain a safe distance from the vehicle ahead. This system relies on various sensors and the ECM to modulate engine power based on the driving conditions. When the ECM fails to respond to the torque request, it can lead to a loss of functionality in the ACC system, which may compromise safety and convenience during driving.

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

Common Causes of U11F9 Dodge

  1. Faulty throttle body or electronic throttle control (ETC) system.
  2. Wiring issues or damaged connectors between the ECM and the ACC system.
  3. Malfunctioning sensors, such as the vehicle speed sensor or throttle position sensor.
  4. Software glitches or calibration issues within the ECM.
  5. Mechanical issues within the engine that prevent it from responding to torque requests, such as a vacuum leak or fuel delivery problems.

Symptoms of U11F9 Dodge

  1. Inoperative adaptive cruise control system.
  2. Engine hesitation or unresponsiveness during acceleration.
  3. Warning lights illuminated on the dashboard, particularly the cruise control or check engine light.
  4. Erratic engine behavior, including unexpected acceleration or deceleration.
  5. Increased driver fatigue due to the need for constant manual speed adjustments.

How to Fix U11F9 Dodge

  1. Diagnostic Scan: Begin with a comprehensive diagnostic scan to confirm the U11F9 code and check for any related codes that may provide additional context.
  2. Visual Inspection: Conduct a thorough visual inspection of the wiring and connectors associated with the throttle control and ACC systems for signs of damage or corrosion.
  3. Sensor Testing: Test the relevant sensors, including the throttle position sensor and vehicle speed sensor, to ensure they are functioning correctly and providing accurate readings to the ECM.
  4. Throttle Body Cleaning/Replacement: If the throttle body is found to be dirty or malfunctioning, clean it or replace it as necessary to restore proper engine response.
  5. ECM Reprogramming: If software issues are suspected, reprogram or update the ECM to the latest manufacturer specifications to resolve any glitches.

Cost to Fix U11F9 Dodge

The typical repair costs for addressing the U11F9 code can vary widely based on the specific diagnosis and repairs needed. On average, the cost may range from $200 to $1,200. This estimate includes parts and labor, with labor costs typically ranging from $80 to $150 per hour. Factors such as location, vehicle make and model, and engine type can significantly influence the final bill. In metropolitan areas or at dealerships, rates may be higher, while independent shops often offer more competitive pricing. It is advisable to check local rates and obtain multiple quotes for a more accurate estimate tailored to your specific situation.

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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 Dodge Code

1. What does the U11F9 OBDII code in a Dodge mean?

The U11F9 code indicates that the engine did not respond to an adaptive cruise control torque request in a Dodge vehicle.

2. What are the common symptoms of the U11F9 code?

Common symptoms include the adaptive cruise control system not working properly, reduced engine performance, and potential issues with acceleration.

3. What are the possible causes of the U11F9 code in a Dodge?

Possible causes include a faulty adaptive cruise control module, issues with the engine control module, wiring or connection problems, or a malfunctioning throttle system.

4. How can I diagnose the U11F9 code in my Dodge?

Diagnosis typically involves using a professional OBDII scanner to retrieve the code, checking the adaptive cruise control system components, inspecting wiring connections, and testing the engine response to torque requests.

5. Can I still drive my Dodge with the U11F9 code present?

It is not recommended to drive your Dodge with the U11F9 code present, as it can affect the performance of the adaptive cruise control system and potentially impact engine response.

6. How can I repair the U11F9 code in my Dodge?

Repair options may include replacing the adaptive cruise control module, addressing any issues with the engine control module, repairing wiring connections, or fixing problems with the throttle system.

7. Is the U11F9 code a serious issue in a Dodge?

While the U11F9 code may not cause immediate safety concerns, it is important to address the issue promptly to ensure the proper functioning of the adaptive cruise control system and maintain overall vehicle performance.

8. Can I reset the U11F9 code in my Dodge without fixing the underlying issue?

Resetting the code without addressing the underlying problem is not recommended, as it may lead to recurring issues with the adaptive cruise control system and engine response.

9. How much does it typically cost to repair the U11F9 code in a Dodge?

The cost of repairing the U11F9 code can vary depending on the specific issue causing the code, the needed parts, and labor costs. It is advisable to consult a professional mechanic for an accurate estimate.

10. Are there any preventive measures to avoid the U11F9 code in a Dodge?

Regular maintenance checks, prompt attention to any warning lights or unusual vehicle behavior, and following the manufacturer's recommended service schedule can help prevent issues like the U11F9 code from occurring.

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