U05AA Jeep 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 Jeep 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 Jeep 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 Jeep?
- 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 Jeep?
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 Jeep 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 Jeep Code
1. What are the common symptoms of OBDII code U05AA in a Jeep related to the Charge Air Cooler Coolant Pump?
The common symptoms include engine overheating, poor engine performance, and potential illumination of the Check Engine Light.
2. What are the possible causes of an U05AA code related to the Charge Air Cooler Coolant Pump in a Jeep?
Possible causes can include a faulty charge air cooler coolant pump, wiring issues, low coolant level, or a malfunctioning coolant temperature sensor.
3. How can I diagnose the U05AA code in my Jeep related to the Charge Air Cooler Coolant Pump?
Diagnosis involves using an OBDII scanner to read and interpret the code, checking the charge air cooler coolant pump for proper operation, inspecting the wiring for any damage, and verifying the coolant level.
4. What are the repair options for resolving the U05AA code related to the Charge Air Cooler Coolant Pump in a Jeep?
Repair options may include replacing the charge air cooler coolant pump, repairing or replacing damaged wiring, refilling the coolant to the proper level, or replacing the coolant temperature sensor if needed.
5. Can driving with an unresolved U05AA code related to the Charge Air Cooler Coolant Pump cause further damage to my Jeep?
Continuing to drive with this code unresolved can potentially lead to engine overheating, reduced fuel efficiency, and further damage to engine components, so it's advisable to address the issue promptly.
6. Is it safe to clear the U05AA code related to the Charge Air Cooler Coolant Pump in my Jeep using an OBDII scanner?
While clearing the code may temporarily turn off the Check Engine Light, it is important to address the underlying issue causing the code to prevent potential engine damage or performance issues.
7. How much does it typically cost to repair an U05AA code related to the Charge Air Cooler Coolant Pump in a Jeep?
The cost of repair can vary depending on the exact cause of the code, but it may range from $200 to $600, including parts and labor.
8. Can a DIY enthusiast with some mechanical knowledge fix the U05AA code related to the Charge Air Cooler Coolant Pump in a Jeep?
Depending on the specific issue, some DIY enthusiasts may be able to address the code by replacing components like the coolant pump or sensor, but proper diagnosis and repair are crucial for a successful outcome.
9. Are there any preventive maintenance tips to avoid encountering the U05AA code related to the Charge Air Cooler Coolant Pump in a Jeep?
Regularly checking coolant levels, inspecting the charge air cooler coolant pump for any signs of wear or leaks, and addressing any cooling system issues promptly can help prevent this code from appearing.
10. Does the U05AA code related to the Charge Air Cooler Coolant Pump affect the drivability of the Jeep?
Yes, the code can affect the drivability by causing engine performance issues, potential overheating, and reduced efficiency, so it's important to address the underlying problem to maintain optimal vehicle operation.
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