U05A0 Mercury Code - Invalid Data Received From Evaporative Emission System Leak Detection Control Module
Quick Answer
The Diagnostic Trouble Code (DTC) will set when a network concerns occur during module-to-module communication. Common causes include Faulty Evaporative Emission System Leak Detection Control Module, Evaporative Emission System Leak Detection Control Module harness is open or shorted, Evaporative Emission System Leak Detection 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
- U05A0 Mercury indicates Invalid Data Received From Evaporative Emission System Leak Detection Control Module.
- Common causes
- Common causes include Faulty Evaporative Emission System Leak Detection Control Module, Evaporative Emission System Leak Detection Control Module harness is open or shorted, Evaporative Emission System Leak Detection 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 U05A0 Mercury Description
- Invalid data network concerns are set when data is transferred within the normal inter-module message but contains known invalid data. The transmitting module logs a DTC related to the invalid data concern.
- Missing message network concerns are set when missing message concerns are logged by the module upon failure to receive a message from another module within a defined retry period.
What are the Possible Causes of the DTC U05A0 Mercury?
- Faulty Evaporative Emission System Leak Detection Control Module
- Evaporative Emission System Leak Detection Control Module harness is open or shorted
- Evaporative Emission System Leak Detection Control Module circuit poor electrical connection
How to Fix the DTC U05A0 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the U05A0 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 U05A0 Mercury Code
1. What does OBDII code U05A0 mean on a Mercury?
The U05A0 code indicates "Invalid Data Received From Evaporative Emission System Leak Detection Control Module," meaning there is a communication issue between the leak detection module and other control modules.
2. What are the common symptoms of the U05A0 code on a Mercury?
Symptoms may include an illuminated check engine light, poor fuel efficiency, difficulty passing emissions tests, or no noticeable symptoms at all.
3. What causes the U05A0 code to appear?
Common causes include a faulty evaporative emission system leak detection control module, damaged wiring, loose connectors, or a malfunctioning CAN (Controller Area Network) communication system.
4. Can I drive my Mercury with the U05A0 code?
While the car may still be drivable, ignoring the code could lead to increased emissions or further damage to the EVAP system and communication network.
5. How do I diagnose the U05A0 code on my Mercury?
Use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage or corrosion, and check the integrity of the evaporative emission system leak detection module.
6. How do I fix the U05A0 code on a Mercury?
Repairs may include replacing a faulty leak detection control module, repairing or replacing damaged wiring, securing loose connectors, or updating module software.
7. Can a loose gas cap cause the U05A0 code?
No, a loose gas cap typically triggers a different EVAP-related code, not U05A0, which is related to communication issues.
8. How much does it cost to repair the U05A0 code on a Mercury?
Repair costs vary but could range from $100 to $500, depending on whether the issue is with wiring, connectors, or the leak detection module itself.
9. Does the U05A0 code mean my Mercury has a fuel leak?
Not necessarily. The code refers to a communication problem with the leak detection module, not an actual fuel or vapor leak.
10. Can a software update fix the U05A0 code on a Mercury?
Yes, in some cases, a software update to the affected control modules may resolve communication issues causing this code.
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