U0407 Mercury Code - Invalid Data Received From Glow Plug 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 Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug 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
- U0407 Mercury indicates Invalid Data Received From Glow Plug Control Module.
- Common causes
- Common causes include Faulty Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug 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 U0407 Mercury Description
What are the Possible Causes of the DTC U0407 Mercury?
- Faulty Glow Plug Control Module
- Glow Plug Control Module harness is open or shorted
- Glow Plug Control Module circuit poor electrical connection
How to Fix the DTC U0407 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 U0407 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 U0407 Mercury Code
1. What does the OBDII code U0407 mean on a Mercury vehicle?
The U0407 code indicates "Invalid Data Received From Glow Plug Control Module," meaning the powertrain control module (PCM) is receiving faulty or unexpected data from the glow plug control module.
2. What are the common symptoms of the U0407 code in a Mercury?
Symptoms may include difficulty starting the engine in cold weather, reduced engine performance, the glow plug indicator staying on or flashing, and the check engine light illuminating.
3. What causes the U0407 code to appear on a Mercury?
Common causes include a faulty glow plug control module, wiring or connection issues, software glitches in the PCM, or a malfunctioning glow plug.
4. Can I drive my Mercury with the U0407 code active?
While the vehicle may still be drivable, it could have difficulty starting in cold weather and experience reduced performance. It's best to diagnose and repair the issue promptly.
5. How is the U0407 code diagnosed in a Mercury?
A technician will typically use a scan tool to confirm the code, inspect the wiring and connections between the PCM and the glow plug control module, and test the module itself for faults.
6. What is the most common fix for the U0407 code on a Mercury?
The most common repair is replacing a faulty glow plug control module, though wiring repairs or reprogramming the PCM may also be necessary.
7. Can a dead battery cause the U0407 code in a Mercury?
A low or dead battery can sometimes cause communication errors like U0407, but it’s not a primary cause. It’s important to check the electrical system as part of the diagnosis.
8. Does the U0407 code only affect diesel engines in Mercury vehicles?
Yes, this code is specific to diesel engines, as it relates to the glow plug system that assists in cold-starting diesel engines.
9. How much does it cost to fix the U0407 code on a Mercury vehicle?
The cost depends on the root cause. Replacing a glow plug control module can cost $200–$600, while wiring repairs or PCM reprogramming may vary based on labor rates.
10. Can a software update fix the U0407 code in a Mercury?
Yes, if the issue is caused by outdated or corrupted PCM software, a software update from the dealership may resolve the problem.
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