AutoCodes.com
Login with Google
AutoCodes – Lincoln – P163D Lincoln

P163D Lincoln Code - Secondary Generator Field Terminal Circuit High

Quick Answer

With the engine running, the charging system warning indicator is off. Common causes include Faulty Generator (Alternator), Generator harness is open or shorted, Generator 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
P163D Lincoln indicates Secondary Generator Field Terminal Circuit High.
Common causes
Common causes include Faulty Generator (Alternator), Generator harness is open or shorted, Generator 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.
Save to My Repairs My Repairs
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 814
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Jan 05, 2020
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P163D Lincoln Description

With the engine running, the charging system warning indicator is off. The circuit from the battery B+ to the generator regulator is 13-15 volts. This voltage feedback is used by the regulator to maintain the battery voltage at the desired set-point. The S (stator) circuit (internal to the generator) is used to monitor generator operation. This circuit and other regulator internal conditions are checked by the regulator to allow the PCM to turn off the charging system warning indicator by sending a message over the Controller Area Network (CAN) bus to the Instrument Cluster (IC). The positive battery output (B+) circuit is the generator output supplied to the battery and electrical system. For dual generator systems, these circuits are duplicated. Both generator regulators send a signal to the Powertrain Control Module (PCM) to allow the PCM to turn off the charging system warning indicator. In dual generator systems, the PCM keeps the secondary generator in a standby state where it does not generate current unless the primary generator is generating full power and more current is needed to support the vehicle loads. This may make it appear that the secondary generator is not working when vehicle loads are not large. It is important to note that a normal operational state of the charging system is for the secondary generator to not produce current.
OBDII Code P163D Lincoln - Secondary Generator Field Terminal Circuit High - AutoCodes.com
P163D Lincoln Code - Secondary Generator Field Terminal Circuit High
What does this mean?

What are the Possible Causes of the DTC P163D Lincoln?

  • Faulty Generator (Alternator)
  • Generator harness is open or shorted
  • Generator circuit poor electrical connection
  • Faulty Powertrain Control Module (PCM)

How to Fix the DTC P163D Lincoln?

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 P163D Lincoln 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.

Need more information about the P163D Lincoln code?

Need more information on how to fix the P163D Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P163D Lincoln code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P163D Lincoln Code

1. What does the OBDII code P163D mean on a Lincoln?

P163D indicates a "Secondary Generator Field Terminal Circuit High," meaning the secondary alternator's field circuit is experiencing a higher voltage than expected.

2. What are the symptoms of a P163D code on a Lincoln?

Common symptoms include battery charging issues, illuminated battery or check engine light, dim headlights, and possible electrical system malfunctions.

3. What causes the P163D code on a Lincoln?

Possible causes include a faulty secondary alternator, damaged wiring or connectors in the alternator field circuit, or issues with the PCM (Powertrain Control Module).

4. Can a bad battery cause the P163D code on a Lincoln?

While rare, a weak or failing battery may contribute to charging system issues, but the code primarily points to problems with the alternator or its circuit.

5. How is the P163D code diagnosed on a Lincoln?

A mechanic will check the alternator, inspect wiring and connectors for damage, test the voltage regulator, and use a scan tool to monitor live data from the alternator field circuit.

6. Can I drive my Lincoln with a P163D code?

Driving with this code is not recommended, as it could lead to battery depletion and potential stalling due to improper charging.

7. How do you fix the P163D code on a Lincoln?

Repairs may include replacing the secondary alternator, repairing damaged wiring or connectors, or reprogramming/updating the PCM if necessary.

8. How much does it cost to fix a P163D code on a Lincoln?

Costs vary depending on the exact issue but could range from $150 to $800, depending on whether the alternator, wiring, or PCM needs to be repaired or replaced.

9. Can a software update fix the P163D code on a Lincoln?

In some cases, a PCM reprogramming or software update may resolve the issue if the problem is related to outdated calibration.

10. How can I prevent the P163D code on my Lincoln?

Regularly inspect the alternator, battery, and wiring for wear or damage, and ensure the vehicle's electrical system is maintained properly.

Discuss the causes and fixes for P163D Lincoln OBDII Code

Submit a New Comment

Code P163D Lincoln comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play