U016C Mercury Code - Lost Communication With Fuel Pump Control Module 'B'
Quick Answer
The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor 2 (FPM2) circuit for the presence of a duty cycled signal. Common causes include Faulty Fuel Pump Control Module Relay, Faulty Fuel Pump Control Module, Fuel Pump 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
- U016C Mercury indicates Lost Communication With Fuel Pump Control Module 'B'.
- Common causes
- Common causes include Faulty Fuel Pump Control Module Relay, Faulty Fuel Pump Control Module, Fuel Pump 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 U016C Mercury Description
What are the Possible Causes of the DTC U016C Mercury?
- Faulty Fuel Pump Control Module Relay
- Faulty Fuel Pump Control Module
- Fuel Pump Control Module harness is open or shorted
- Fuel Pump Control Module circuit poor electrical connection
How to Fix the DTC U016C 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 U016C 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 U016C Mercury Code
1. What does the OBD-II code U016C mean for a Mercury vehicle?
The U016C code indicates a loss of communication between the Fuel Pump Control Module 'B' and other modules in the vehicle's network.
2. What are the common symptoms of the U016C code in a Mercury?
Symptoms include difficulty starting the vehicle, engine stalling, reduced fuel efficiency, or the inability to start at all.
3. What causes the U016C code to appear in a Mercury?
This code can be caused by wiring issues, such as damaged or loose electrical connections, a failed Fuel Pump Control Module 'B,' or network communication errors.
4. Can a weak battery trigger the U016C code in a Mercury?
Yes, a weak or failing battery can disrupt communication between modules and trigger this code.
5. How do you diagnose the U016C code on a Mercury vehicle?
Diagnosis typically involves inspecting the wiring and connectors, testing the Fuel Pump Control Module, and checking for proper voltage and ground signals.
6. Can driving with the U016C code damage my Mercury?
While it may not immediately cause damage, unresolved issues with the fuel pump control system can lead to engine performance problems and potential safety concerns.
7. What is the most common fix for the U016C code on a Mercury?
The most common fix is repairing or replacing damaged wiring or connectors leading to the Fuel Pump Control Module.
8. Do I need to replace the Fuel Pump Control Module 'B' for the U016C code?
Replacement is necessary only if the module has been confirmed as faulty after thorough testing.
9. Can a software update fix the U016C code in a Mercury?
In some cases, a software update or reprogramming of the affected modules may resolve communication issues.
10. Is the U016C code specific to Mercury vehicles?
No, the U016C code can appear on various makes and models, but its interpretation and repair may vary depending on the vehicle's design.
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