AutoCodes – Mercury – P2328 Mercury

P2328 Mercury Code - Ignition Coil 'J' Primary Control Circuit High

Quick Answer

The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. Common causes include Faulty Ignition Coil 'J', Ignition Coil 'J' harness is open or shorted, Ignition Coil 'J' 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
P2328 Mercury indicates Ignition Coil 'J' Primary Control Circuit High.
Common causes
Common causes include Faulty Ignition Coil 'J', Ignition Coil 'J' harness is open or shorted, Ignition Coil 'J' 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 944
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P2328 Mercury Description

The current flow, or dwell, through the primary ignition coil is controlled by the Powertrain Control Module (PCM) by providing a switched ground path through the ignition coil driver to ground. When the ignition coil driver is switched on, current rapidly builds up to a maximum value, determined by the coil inductance and resistance. When the current is switched off, the magnetic field collapses which induces a secondary high voltage surge and the spark plug is fired. This high voltage surge creates a flyback voltage which the PCM uses as a feedback during the ignition diagnostics. The PCM continuously monitors the ignition system for concerns. The P2328 code sets when the PCM detects a short to voltage in the circuit.
OBDII Code P2328 Mercury - Ignition Coil 'J' Primary Control Circuit High - AutoCodes.com
P2328 Mercury Code - Ignition Coil 'J' Primary Control Circuit High

What are the Possible Causes of the DTC P2328 Mercury?

  • Faulty Ignition Coil 'J'
  • Ignition Coil 'J' harness is open or shorted
  • Ignition Coil 'J' circuit poor electrical connection

How to Fix the DTC P2328 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 P2328 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.

Need more information about the P2328 Mercury code?

Need more information on how to fix the P2328 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2328 Mercury 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 P2328 Mercury Code

1. What are the common symptoms of OBDII code P2328 in a Mercury related to Ignition Coil 'J' Primary Control Circuit High?

- Common symptoms include rough idling, engine misfires, loss of power, and illuminated Check Engine Light.

2. What are the potential causes of OBDII code P2328 in a Mercury?

- The code P2328 typically indicates a fault in the ignition coil 'J' primary control circuit, which could be caused by a faulty ignition coil, wiring issues, or a problem with the Engine Control Module (ECM).

3. How serious is OBDII code P2328 in a Mercury?

- Ignoring code P2328 can lead to poor engine performance, decreased fuel efficiency, and potential damage to the catalytic converter. It is recommended to address this issue promptly.

4. Can I drive my Mercury with OBDII code P2328?

- It is not recommended to drive your Mercury with code P2328, as it can cause further damage to the engine and other components. It's best to have the issue diagnosed and repaired before driving the vehicle.

5. How can I diagnose and repair OBDII code P2328 in my Mercury?

- Diagnosis typically involves checking the ignition coil 'J', inspecting the wiring for any damage, and testing the ECM. Repair may involve replacing the faulty ignition coil, repairing the wiring, or reprogramming the ECM.

6. Can a DIYer fix OBDII code P2328 in a Mercury?

- While some DIYers may have the skills to diagnose and repair code P2328, it is recommended to seek professional help, especially when dealing with electrical components like the ignition system.

7. What is the approximate cost to repair OBDII code P2328 in a Mercury?

- The cost to repair code P2328 can vary depending on the exact cause of the issue and whether you choose to do the repair yourself or take your Mercury to a mechanic. Costs can range from $100 to $400 or more.

8. How long does it take to repair OBDII code P2328 in a Mercury?

- The repair time for code P2328 can vary based on the extent of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem.

9. Will resetting the OBDII code P2328 in my Mercury make the issue go away?

- Resetting the code may temporarily turn off the Check Engine Light, but it will not fix the underlying issue causing code P2328. It's important to diagnose and repair the problem to prevent further issues.

10. Can OBDII code P2328 in a Mercury cause damage if left unaddressed?

- Yes, leaving code P2328 unaddressed can potentially lead to more severe engine problems, reduced fuel efficiency, and increased emissions. It's best to address the issue promptly.

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