U05AA Chrysler Code - Implausible Data Received From Charge Air Cooler Coolant Pump
Quick Answer
To improve engine performance the Charge Air Cooler (CAC) system is used to reduce the temperature of the air entering the combustion chambers. Common causes include Faulty Auxiliary Coolant Pump, Auxiliary Coolant Pump harness is open or shorted, Auxiliary Coolant Pump 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
- U05AA Chrysler indicates Implausible Data Received From Charge Air Cooler Coolant Pump.
- Common causes
- Common causes include Faulty Auxiliary Coolant Pump, Auxiliary Coolant Pump harness is open or shorted, Auxiliary Coolant Pump 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.
Code U05AA Chrysler Description
The Auxiliary Coolant Pump is a smart device that contains a LIN Bus communication module and a coolant pump. To maintain a desired charge air temperature, the PCM sends a pump speed command over the LIN bus to the internal Auxiliary Coolant Pump. The internal Auxiliary Coolant Pump module controls the pump speed/coolant flow rate using Pulse-Width Modulation (PWM). The Auxiliary Coolant Pump assembly monitors for internal system circuit and performance failures. If a fault occurs the Auxiliary Coolant Pump module sends the fault information to the PCM through the dedicated LIN Bus. The PCM processes the information received, then sets the correlating fault.
What are the Possible Causes of the DTC U05AA Chrysler?
- Faulty Auxiliary Coolant Pump
- Auxiliary Coolant Pump harness is open or shorted
- Auxiliary Coolant Pump circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC U05AA Chrysler?
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 U05AA Chrysler 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.
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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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