U0121 2010 Ford Fusion Code - Lost Communication With The Anti-lock Brake System Control Module
Quick Answer
The Powertrain Control Module (PCM) continuously monitors the Controller Area Network (CAN) for messages from the ABS. Common causes include Damaged CAN communication bus circuit, Faulty Anti-lock Brake System (ABS) Control Module, Anti-lock Brake System Control Module harness is open or shorted. 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
- U0121 2010 Ford Fusion indicates Lost Communication With The Anti-lock Brake System Control Module.
- Common causes
- Common causes include Damaged CAN communication bus circuit, Faulty Anti-lock Brake System (ABS) Control Module, Anti-lock Brake System Control Module harness is open or shorted.
- 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 U0121 2010 Ford Fusion Description
Pictures shown may vary from actual
What are the Possible Causes of the DTC U0121 2010 Ford Fusion?
- Damaged CAN communication bus circuit
- Faulty Anti-lock Brake System (ABS) Control Module
- Anti-lock Brake System Control Module harness is open or shorted
- Anti-lock Brake System Control Module circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC U0121 2010 Ford Fusion?
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 U0121 2010 Ford Fusion 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 U0121 2010 Ford Fusion Code
1. What are the common symptoms of OBDII code U0121 in a 2010 Ford Fusion?
- Common symptoms include the ABS warning light illuminating on the dashboard, loss of communication with the ABS system, and potential issues with the vehicle's braking system.
2. What causes the U0121 code in a 2010 Ford Fusion?
- The U0121 code is typically triggered by a communication error between the vehicle's onboard computer system and the Anti-lock Brake System Control Module, which could be due to damaged wiring, a faulty ABS module, or a poor connection.
3. How can I diagnose the U0121 code in my 2010 Ford Fusion?
- Diagnosis involves using an OBDII scanner to retrieve the specific code, checking the wiring harness and connections related to the ABS module, and testing the ABS module itself for proper function.
4. Can I still drive my 2010 Ford Fusion with the U0121 code present?
- It is not recommended to drive the vehicle with the U0121 code active, as it indicates a potential issue with the ABS system that could affect braking performance and safety.
5. How can I repair the U0121 code in my 2010 Ford Fusion?
- Repairing the U0121 code may involve fixing any damaged wiring, replacing the ABS module if necessary, ensuring proper connections, and clearing the code with an OBDII scanner.
6. Is the U0121 code in a 2010 Ford Fusion a serious issue?
- Yes, the U0121 code indicating lost communication with the ABS module is a serious issue that should be addressed promptly to ensure the proper functioning of the vehicle's braking system.
7. Can a DIY enthusiast fix the U0121 code in a 2010 Ford Fusion?
- While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing the U0121 code may require specialized tools and expertise, so it's recommended to consult a professional mechanic.
8. How much does it cost to repair the U0121 code in a 2010 Ford Fusion?
- The cost of repairing the U0121 code can vary depending on the root cause of the issue, but it may involve expenses for diagnosing the problem, replacing components, and labor costs.
9. Will resetting the U0121 code make it go away permanently?
- Resetting the U0121 code with an OBDII scanner may temporarily clear the code, but if the underlying issue causing the communication error is not addressed, the code is likely to reappear.
10. Can extreme weather conditions trigger the U0121 code in a 2010 Ford Fusion?
- Extreme weather conditions such as extreme cold or heat can potentially affect the electrical connections and components related to the ABS system, leading to the U0121 code being triggered.
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