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U05AA Chrysler Code - Implausible Data Received From Charge Air Cooler Coolant Pump

Quick Answer

The U05AA diagnostic trouble code (DTC) indicates that the engine control module (ECM) has detected implausible data from the charge air cooler coolant pump. Common causes include Faulty Charge Air Cooler Coolant Pump: The pump may be malfunctioning, leading to inadequate coolant flow, Wiring Issues: Damaged or corroded wiring and connectors that affect the signal sent to the ECM, Sensor Malfunction: Defective temperature or pressure sensors that provide incorrect data to the ECM. 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
U05AA Chrysler indicates Implausible Data Received From Charge Air Cooler Coolant Pump.
Common causes
Common causes include Faulty Charge Air Cooler Coolant Pump: The pump may be malfunctioning, leading to inadequate coolant flow, Wiring Issues: Damaged or corroded wiring and connectors that affect the signal sent to the ECM, Sensor Malfunction: Defective temperature or pressure sensors that provide incorrect data to the ECM.
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 01, 2024
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Code U05AA Chrysler Description

The U05AA diagnostic trouble code (DTC) indicates that the engine control module (ECM) has detected implausible data from the charge air cooler coolant pump. This pump is crucial in managing the temperature of the charge air cooler, which cools the air entering the engine for combustion. When the ECM receives data that doesn't align with expected parameters—such as flow rates, pressure, or temperature—it triggers this code.

OBDII Code U05AA Chrysler - Implausible Data Received From Charge Air Cooler Coolant Pump
U05AA Chrysler Code - Implausible Data Received From Charge Air Cooler Coolant Pump

Common Causes of U05AA Chrysler

  1. Faulty Charge Air Cooler Coolant Pump: The pump may be malfunctioning, leading to inadequate coolant flow.
  2. Wiring Issues: Damaged or corroded wiring and connectors that affect the signal sent to the ECM.
  3. Sensor Malfunction: Defective temperature or pressure sensors that provide incorrect data to the ECM.
  4. Coolant Flow Obstructions: Blockages in the coolant lines or the charge air cooler itself that impede proper flow.
  5. Software Glitches: Outdated or corrupted ECM software that misinterprets data from the coolant pump.

Symptoms of U05AA Chrysler

  1. Reduced Engine Performance: Noticeable loss of power during acceleration or under load.
  2. Increased Engine Temperature: Higher than normal operating temperatures, potentially leading to overheating.
  3. Check Engine Light: The illumination of the check engine light on the dashboard, indicating a fault in the system.
  4. Poor Fuel Economy: A decrease in miles per gallon (MPG) due to inefficient combustion.
  5. Unusual Engine Noises: Sounds such as knocking or pinging, which may indicate pre-ignition or detonation.

How to Fix U05AA Chrysler

  1. Diagnostic Scan: Use a professional OBD-II scanner to confirm the U05AA code and check for any related codes.
  2. Visual Inspection: Inspect the charge air cooler coolant pump, wiring, and connectors for any visible damage or corrosion.
  3. Test the Pump: Check the operation of the coolant pump using a multimeter to ensure it is receiving power and functioning correctly.
  4. Inspect Coolant Flow: Verify that there are no blockages in the coolant lines and that the coolant is circulating properly.
  5. Reprogram or Update ECM: If software issues are suspected, reprogram or update the ECM to the latest version to ensure accurate data processing.

Cost to Fix U05AA Chrysler

The typical repair costs for addressing the U05AA code can vary widely based on the specific issue identified. Basic repairs, such as replacing a faulty coolant pump or repairing wiring, may range from $200 to $600. More extensive repairs, including sensor replacements or ECM reprogramming, could escalate costs to $800 or more.

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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 U05AA Chrysler Code

1. What are the common symptoms of OBDII code U05AA in a Chrysler related to the Charge Air Cooler Coolant Pump?

- Common symptoms include engine overheating, reduced engine performance, and potential warning lights on the dashboard.

2. What are the possible causes of the U05AA code in a Chrysler?

- The code U05AA can be triggered by issues such as a faulty charge air cooler coolant pump, wiring problems, or a malfunctioning control module.

3. How can I diagnose the cause of the U05AA code in my Chrysler?

- A proper diagnostic scan tool can help pinpoint the exact issue by reading live data from the charge air cooler coolant pump and related components.

4. Is it safe to continue driving my Chrysler with the U05AA code present?

- It is not recommended to drive your vehicle with an active U05AA code, as it can lead to further damage and potential engine issues.

5. How can I repair the U05AA code related to the Charge Air Cooler Coolant Pump in my Chrysler?

- Repair usually involves replacing the faulty charge air cooler coolant pump, repairing any damaged wiring, and resetting the fault code with a diagnostic tool.

6. Can a DIY enthusiast fix the U05AA code issue in a Chrysler?

- While some experienced individuals may be able to replace the charge air cooler coolant pump themselves, it is recommended to consult a professional mechanic for proper diagnosis and repair.

7. How much does it typically cost to fix the U05AA code in a Chrysler at a repair shop?

- The cost of fixing the U05AA code can vary based on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Are there any preventive maintenance tips to avoid encountering the U05AA code in a Chrysler?

- Regularly inspecting and maintaining the charge air cooler coolant pump, as well as addressing any cooling system issues promptly, can help prevent the occurrence of the U05AA code.

9. Will resetting the OBDII code U05AA in a Chrysler make the problem go away permanently?

- Simply resetting the code without addressing the underlying issue, such as a faulty charge air cooler coolant pump, will likely lead to the code reappearing in the future.

10. Can a low battery voltage or electrical system issue trigger the U05AA code in a Chrysler?

- Yes, a low battery voltage or electrical system problem can sometimes cause communication errors leading to the U05AA code being triggered.

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