U0420 Mercury Code - Invalid Data Received From Power Steering Control Module
Quick Answer
A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Power Steering Control Module, Power Steering Control Module harness is open or shorted, Power Steering Control Module 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
- U0420 Mercury indicates Invalid Data Received From Power Steering Control Module.
- Common causes
- Common causes include Faulty Power Steering Control Module, Power Steering Control Module harness is open or shorted, Power Steering Control Module 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 U0420 Mercury Description
What are the Possible Causes of the DTC U0420 Mercury?
- Faulty Power Steering Control Module
- Power Steering Control Module harness is open or shorted
- Power Steering Control Module circuit poor electrical connection
How to Fix the DTC U0420 Mercury?
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 U0420 Mercury 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 U0420 Mercury Code
1. What are the common symptoms of OBDII code U0420 in a Mercury related to the Power Steering Control Module?
- Common symptoms include issues with power steering functionality, such as stiff or jerky steering, loss of power assist, or unusual noises coming from the power steering system.
2. What could be the possible causes of the U0420 code in a Mercury indicating "Invalid Data Received From Power Steering Control Module"?
- The code U0420 can be triggered by a faulty power steering control module, damaged wiring or connectors, low power steering fluid levels, or a communication error between the power steering module and the vehicle's onboard computer.
3. How can I diagnose the U0420 code in my Mercury related to the Power Steering Control Module?
- To diagnose the U0420 code, you may need to use an OBDII scanner to retrieve the specific error code and further investigate the power steering system for any visible signs of damage or malfunction. Checking the power steering control module, wiring, and connections is crucial.
4. Is it safe to drive my Mercury with the U0420 code indicating issues with the Power Steering Control Module?
- It is not recommended to drive your Mercury with the U0420 code active, as steering problems can compromise your ability to control the vehicle safely. It's best to address the issue promptly to avoid potential safety hazards.
5. Can I reset the U0420 code related to the Power Steering Control Module in my Mercury by disconnecting the battery?
- While disconnecting the battery may clear the error code temporarily, it will not fix the underlying issue causing the U0420 code. It's essential to diagnose and repair the problem to prevent the code from reoccurring.
6. How much does it typically cost to repair the U0420 code in a Mercury due to problems with the Power Steering Control Module?
- The cost of repairing the U0420 code can vary depending on the specific cause of the issue. It may involve replacing the power steering control module, fixing wiring connections, or addressing other related components. Repair costs can range from a few hundred to over a thousand dollars.
7. Can a DIY enthusiast fix the U0420 code related to the Power Steering Control Module in a Mercury?
- While some enthusiasts with automotive repair experience may attempt to address the U0420 code themselves, diagnosing and fixing issues related to the power steering control module can be complex. It's recommended to consult a professional mechanic for proper diagnosis and repair.
8. Will the U0420 code in my Mercury reset on its own, or do I need to manually clear it after fixing the underlying issue?
- After fixing the underlying problem causing the U0420 code, you may need to use an OBDII scanner to clear the code manually. The code may not reset on its own, even after the issue is resolved.
9. Are there any preventive measures I can take to avoid encountering the U0420 code in my Mercury linked to the Power Steering Control Module?
- Regularly checking the power steering system for signs of wear or damage, maintaining proper power steering fluid levels, and addressing any steering-related issues promptly can help prevent the occurrence of the U0420 code.
10. How long does it typically take for a professional mechanic to diagnose and repair the U0420 code indicating "Invalid Data Received From Power Steering Control Module" in a Mercury?
- The time required for diagnosis and repair of the U0420 code can vary based on the specific cause of the issue and the availability of parts. It may take a few hours to a full day for a mechanic to diagnose, repair, and test the power steering system thoroughly.
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