P163C Mercury Code - Secondary Generator Field Terminal Circuit Low
Quick Answer
The P163C diagnostic trouble code for a Mercury indicates a problem with the Secondary Generator Field Terminal Circuit being low. Common causes include Faulty generator/alternator, Loose or corroded electrical connections, Damaged wiring or harness related to the generator field terminal. 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
- P163C Mercury indicates Secondary Generator Field Terminal Circuit Low.
- Common causes
- Common causes include Faulty generator/alternator, Loose or corroded electrical connections, Damaged wiring or harness related to the generator field terminal.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P163C Mercury Description
The P163C diagnostic trouble code for a Mercury indicates a problem with the Secondary Generator Field Terminal Circuit being low. In simpler terms, this means that there is an issue with the electrical circuit that controls the generator's field terminal. The generator, also known as the alternator, is responsible for charging the vehicle's battery and providing power to the electrical system when the engine is running.
Common Causes of P163C Mercury
- Faulty generator/alternator.
- Loose or corroded electrical connections.
- Damaged wiring or harness related to the generator field terminal.
- Malfunctioning voltage regulator.
- Issues with the Engine Control Module (ECM) or Powertrain Control Module (PCM).
Symptoms of P163C Mercury
- Dim or flickering lights on the dashboard or exterior of the vehicle.
- Battery warning light illuminated on the dashboard.
- Difficulty starting the vehicle or frequent need for jump starts.
- Electrical components not functioning properly, such as power windows or radio.
- Engine stalling or hesitation while driving.
How to Fix P163C Mercury
- Begin by conducting a thorough inspection of the generator, wiring, and electrical connections for any visible damage or corrosion.
- Test the generator output and voltage regulator to ensure they are functioning within the manufacturer's specifications.
- If necessary, replace any faulty components such as the generator, voltage regulator, or damaged wiring.
- Clear the diagnostic trouble codes from the vehicle's computer using a scan tool.
- Test the vehicle to ensure the issue has been resolved and that the Secondary Generator Field Terminal Circuit is functioning properly.
Cost to Fix P163C Mercury
The cost of repairing a Secondary Generator Field Terminal Circuit low issue on a Mercury can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, the cost of parts such as a new generator or voltage regulator can range from $200 to $500 or more. Labor costs at auto repair shops typically range from $80 to $150 per hour, and the total repair bill can add up to several hundred dollars or more. It's recommended to consult with a trusted mechanic or repair shop for a more accurate estimate based on your vehicle's make and model, as well as the local labor rates in your area.
Need more information about the P163C Mercury code?
Need more information on how to fix the P163C Mercury code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P163C Mercury code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P163C Mercury Code
1. What does OBDII code P163C mean for a Mercury vehicle?
P163C indicates a "Secondary Generator Field Terminal Circuit Low," meaning there’s an issue with the electrical circuit controlling the secondary generator or alternator.
2. What are the common symptoms of code P163C in a Mercury?
Symptoms may include a check engine light, battery warning light, poor charging performance, dim headlights, or difficulty starting the vehicle.
3. What causes the P163C code to appear in Mercury vehicles?
Common causes include a faulty alternator, damaged wiring or connectors in the generator field circuit, or a malfunctioning powertrain control module (PCM).
4. Can a bad battery trigger the P163C code?
While a bad battery itself is unlikely to directly cause P163C, it can contribute to charging system issues that may lead to this code.
5. How do you diagnose the P163C code on a Mercury?
Diagnosis typically involves inspecting the generator field circuit wiring and connectors, testing the alternator, and checking the PCM for proper operation.
6. Can you drive a Mercury with the P163C code active?
Driving with this code is not recommended, as it may result in a drained battery, loss of power, or vehicle stalling.
7. What repairs are needed to fix the P163C code?
Repairs may include replacing the alternator, repairing or replacing damaged wiring, or reprogramming or replacing the PCM if necessary.
8. How much does it cost to fix the P163C code on a Mercury?
The repair costs can vary widely, ranging from $100 for simple wiring repairs to $500–$1,000 if the alternator or PCM needs replacement.
9. Can disconnecting the battery clear the P163C code?
Disconnecting the battery may temporarily clear the code, but it won’t fix the underlying problem, and the code will likely return.
10. How can you prevent the P163C code from occurring again?
Regularly inspect and maintain the charging system, check wiring and connections for wear, and replace components like the alternator or battery as needed.
Discuss the causes and fixes for P163C Mercury OBDII Code
Code P163C Mercury comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.