AutoCodes – Suzuki – P2312 Suzuki

P2312 Suzuki Code - Ignition Coil 5 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 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 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 Suzuki indicates Ignition Coil 5 Primary Control Circuit Low.
Common causes: Common causes include Faulty Ignition Coil 5, Ignition Coil 5 harness is open or shorted, Ignition Coil 5 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 1,748

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 Suzuki 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 Suzuki - Ignition Coil 5 Primary Control Circuit Low - AutoCodes.com — P2312 Suzuki Code - Ignition Coil 5 Primary Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2312 Suzuki?

Faulty Ignition Coil 5
Ignition Coil 5 harness is open or shorted
Ignition Coil 5 circuit poor electrical connection

How to Fix the DTC P2312 Suzuki?

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 Suzuki 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 P2312 Suzuki code?

Need more information on how to fix the P2312 Suzuki code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2312 Suzuki 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 P2312 Suzuki Code

1. What are the common symptoms of OBDII code P2312 related to the Ignition Coil 5 Primary Control Circuit Low in a Suzuki?

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

2. What can cause the OBDII code P2312 in a Suzuki indicating Ignition Coil 5 Primary Control Circuit Low?

Potential 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 OBDII code P2312 for Ignition Coil 5 Primary Control Circuit Low in my Suzuki?

Diagnosing this code typically involves inspecting the ignition coil, checking for damaged wiring or connectors, and using a scan tool to analyze the circuit's performance.

4. Can a bad spark plug lead to the OBDII code P2312 in a Suzuki?

Yes, a faulty spark plug can lead to misfires that trigger the Ignition Coil 5 Primary Control Circuit Low code due to improper combustion in the affected cylinder.

5. Is it safe to continue driving with the OBDII code P2312 related to Ignition Coil 5 Primary Control Circuit Low in my Suzuki?

Continuing to drive with this issue can potentially cause further damage to the engine and catalytic converter, so it's recommended to address the problem promptly.

6. How can I repair the OBDII code P2312 for Ignition Coil 5 Primary Control Circuit Low in my Suzuki?

Repair options may include replacing the faulty ignition coil, repairing damaged wiring or connectors, or resetting the ECM after fixing the underlying issue.

7. Can a DIY enthusiast resolve the OBDII code P2312 on a Suzuki related to Ignition Coil 5 Primary Control Circuit Low?

DIY enthusiasts with automotive repair experience may be able to address this code by following a detailed diagnostic and repair process, but professional assistance is recommended if uncertain.

8. Are there any preventive maintenance tips to avoid encountering the OBDII code P2312 in a Suzuki?

Regularly inspecting and maintaining the ignition system, including the coils, spark plugs, and wiring, can help prevent issues that may trigger the Ignition Coil 5 Primary Control Circuit Low code.

9. How long does it typically take to repair the OBDII code P2312 for Ignition Coil 5 Primary Control Circuit Low in a Suzuki?

The repair time can vary depending on the specific cause of the code, but it may range from a quick fix like replacing a faulty coil to a more involved process of diagnosing and repairing wiring issues.

10. Can weather conditions or driving habits affect the likelihood of experiencing the OBDII code P2312 related to Ignition Coil 5 Primary Control Circuit Low in a Suzuki?

Extreme weather conditions, prolonged idling, or sudden acceleration can potentially exacerbate existing ignition system issues and contribute to triggering this code.