AutoCodes – Mercury – P2310 Mercury

P2310 Mercury Code - Ignition Coil 'D' 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 'D', Ignition Coil 'D' harness is open or shorted, Ignition Coil 'D' 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: P2310 Mercury indicates Ignition Coil 'D' Primary Control Circuit High.
Common causes: Common causes include Faulty Ignition Coil 'D', Ignition Coil 'D' harness is open or shorted, Ignition Coil 'D' 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.

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Code Popularity 1,198

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2310 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 P2310 code sets when the PCM detects a short to voltage in the circuit.

OBDII Code P2310 Mercury - Ignition Coil 'D' Primary Control Circuit High - AutoCodes.com — P2310 Mercury Code - Ignition Coil 'D' Primary Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P2310 Mercury?

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

How to Fix the DTC P2310 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 P2310 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 P2310 Mercury code?

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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 P2310 Mercury Code

1. What are the common symptoms of OBDII code P2310 Mercury related to the Ignition Coil 'D' Primary Control Circuit High?

- Common symptoms include engine misfires, rough idle, lack of power, and in some cases, the Check Engine light may illuminate.

2. What are the possible causes of OBDII code P2310 Mercury indicating an issue with the Ignition Coil 'D' Primary Control Circuit High?

- Possible causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or a problem with the Engine Control Module (ECM).

3. How can I diagnose the root cause of OBDII code P2310 Mercury regarding the Ignition Coil 'D' Primary Control Circuit High?

- A thorough inspection of the ignition coil, wiring, and connectors is recommended. Testing the coil's resistance and checking for continuity in the circuit can help pinpoint the issue.

4. Can a DIY enthusiast repair OBDII code P2310 Mercury related to the Ignition Coil 'D' Primary Control Circuit High?

- Depending on the root cause, DIY repairs are possible, such as replacing the faulty ignition coil or repairing damaged wiring. However, if the issue lies with the ECM, professional assistance may be required.

5. Are there any tips for repairing OBDII code P2310 Mercury associated with the Ignition Coil 'D' Primary Control Circuit High?

- Ensure all connections are secure and free of corrosion, use a multimeter to test the components in the circuit, and follow a systematic approach to troubleshooting and repairs.

6. What are the potential risks of ignoring OBDII code P2310 Mercury related to the Ignition Coil 'D' Primary Control Circuit High?

- Ignoring this code can lead to poor engine performance, decreased fuel efficiency, and potential damage to other engine components over time.

7. Is it safe to drive my vehicle with OBDII code P2310 Mercury indicating an issue with the Ignition Coil 'D' Primary Control Circuit High?

- It is not recommended to drive the vehicle with this code present, as it can result in further damage and potentially leave you stranded due to engine issues.

8. How much does it typically cost to repair OBDII code P2310 Mercury linked to the Ignition Coil 'D' Primary Control Circuit High?

- The cost of repairs can vary depending on the root cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Can weather conditions or environmental factors trigger OBDII code P2310 Mercury associated with the Ignition Coil 'D' Primary Control Circuit High?

- While extreme weather conditions or moisture can potentially affect the ignition system, the code is more commonly triggered by component failures or wiring issues.

10. How long does it usually take to repair OBDII code P2310 Mercury related to the Ignition Coil 'D' Primary Control Circuit High?

- The repair time can vary based on the complexity of the issue and the availability of parts, but it typically takes a few hours to a full day for diagnosis and repairs to be completed.