AutoCodes – Dodge – P2312 Dodge

P2312 Dodge 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 Dodge 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 2,065

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

What does this mean?

What are the Possible Causes of the DTC P2312 Dodge?

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 Dodge?

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 Dodge 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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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 Dodge Code

1. What are the common symptoms of OBDII code P2312 Dodge related to the Ignition Coil 'E' Primary Control Circuit Low?

- Common symptoms include engine misfires, rough idling, decreased fuel efficiency, and illuminated Check Engine light.

2. What are the possible causes of OBDII code P2312 Dodge indicating Ignition Coil 'E' Primary Control Circuit Low?

- The code may be triggered by a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, or issues with the Engine Control Module (ECM).

3. How can I diagnose the cause of OBDII code P2312 Dodge for the Ignition Coil 'E' Primary Control Circuit Low?

- Use a diagnostic scanner to read the code and perform a visual inspection of the ignition coil and related wiring. Test the ignition coil and inspect for any signs of damage.

4. Can I still drive my vehicle with OBDII code P2312 Dodge for Ignition Coil 'E' Primary Control Circuit Low?

- It is not recommended to drive your vehicle extensively with this code present, as it can lead to further engine damage and potential safety issues.

5. What are the repair options for resolving OBDII code P2312 Dodge related to Ignition Coil 'E' Primary Control Circuit Low?

- Repair options include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, and resetting the ECM after completing the repairs.

6. Are there any DIY tips for addressing OBDII code P2312 Dodge for Ignition Coil 'E' Primary Control Circuit Low?

- DIY enthusiasts can start by checking for loose or damaged wiring connections, inspecting the ignition coil for damage, and clearing the code to see if it returns.

7. How urgent is it to address OBDII code P2312 Dodge indicating Ignition Coil 'E' Primary Control Circuit Low?

- It is important to address this code promptly to prevent potential engine damage, poor performance, and safety hazards while driving.

8. Is it possible for a loose gas cap to trigger OBDII code P2312 Dodge for Ignition Coil 'E' Primary Control Circuit Low?

- No, a loose gas cap is not related to this specific OBDII code. The issue lies within the ignition coil control circuit and requires a different diagnostic approach.

9. Can extreme weather conditions or temperature changes cause OBDII code P2312 Dodge for Ignition Coil 'E' Primary Control Circuit Low to appear?

- While extreme weather conditions may not directly cause this code, they can exacerbate existing issues with the ignition coil or wiring, leading to the code being triggered.

10. How much can I expect to pay for professional repairs related to OBDII code P2312 Dodge for Ignition Coil 'E' Primary Control Circuit Low?

- The cost of professional repairs can vary depending on the specific cause, but it may range from $100 to $300 for parts and labor, excluding diagnostic fees.