AutoCodes – Ford – P2312 Ford

P2312 Ford Code - Ignition Coil 'E' Primary Control Circuit Low

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 'E', Ignition Coil 'E' harness is open or shorted, Ignition Coil 'E' 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: P2312 Ford indicates Ignition Coil 'E' Primary Control Circuit Low.
Common causes: Common causes include Faulty Ignition Coil 'E', Ignition Coil 'E' harness is open or shorted, Ignition Coil 'E' 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 3,958

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 P2312 Ford 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 P2312 code sets when the PCM detects a short to voltage in the circuit.

OBDII Code P2312 Ford - Ignition Coil 'E' Primary Control Circuit Low - AutoCodes.com — P2312 Ford Code - Ignition Coil 'E' Primary Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2312 Ford?

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

How to Fix the DTC P2312 Ford?

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 P2312 Ford 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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Need Help with the 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 P2312 Ford Code

1. What are the common symptoms of OBDII code P2312 Ford (Ignition Coil 'E' Primary Control Circuit Low)?

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

2. What are the possible causes of OBDII code P2312 Ford?

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

3. How can I diagnose the source of OBDII code P2312 Ford?

- You can diagnose the code by performing a visual inspection of the ignition coil 'E', checking the wiring and connectors for damage, and using a diagnostic scanner to analyze the circuit.

4. Can I still drive my vehicle with OBDII code P2312 Ford?

- It is not recommended to drive your vehicle with this code as it can lead to further damage and poor engine performance.

5. How can I repair OBDII code P2312 Ford?

- Repair options include replacing the faulty ignition coil 'E', repairing any damaged wiring or connectors, and clearing the code with a diagnostic scanner.

6. Are there any DIY tips for fixing OBDII code P2312 Ford?

- DIY tips include checking and cleaning the connectors in the ignition coil circuit, ensuring proper grounding, and following the manufacturer's repair guidelines.

7. What should I do if OBDII code P2312 Ford keeps coming back after repairs?

- If the code keeps returning, recheck all repairs for accuracy, consider replacing the Engine Control Module (ECM), and consult a professional mechanic for further assistance.

8. Can a bad spark plug cause OBDII code P2312 Ford?

- While a bad spark plug may contribute to the symptoms associated with this code, the primary cause is typically related to the ignition coil 'E' or its control circuit.

9. Is it safe to clear the OBDII code P2312 Ford and continue driving without addressing the issue?

- Clearing the code without addressing the underlying problem can lead to more serious engine issues and should be avoided.

10. How much does it typically cost to repair OBDII code P2312 Ford at a repair shop?

- The cost of repairs can vary depending on the specific issue, but replacing an ignition coil 'E' and related repairs may range from $150 to $300 at a repair shop.