AutoCodes – Chrysler – P2318 Chrysler

P2318 Chrysler Code - Ignition Coil 'G' 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 'G', Ignition Coil 'G' harness is open or shorted, Ignition Coil 'G' 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: P2318 Chrysler indicates Ignition Coil 'G' Primary Control Circuit Low.
Common causes: Common causes include Faulty Ignition Coil 'G', Ignition Coil 'G' harness is open or shorted, Ignition Coil 'G' 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 1,286

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 P2318 Chrysler 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 P2318 code sets when the PCM detects a short to voltage in the circuit.

OBDII Code P2318 Chrysler - Ignition Coil 'G' Primary Control Circuit Low - AutoCodes.com — P2318 Chrysler Code - Ignition Coil 'G' Primary Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2318 Chrysler?

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

How to Fix the DTC P2318 Chrysler?

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 P2318 Chrysler 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?

Get the P2318 Chrysler 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 P2318 Chrysler Code

1. What are the common symptoms of OBDII code P2318 in a Chrysler vehicle?

- Common symptoms include rough idling, engine misfires, loss of power, and illuminated check engine light.

2. What does the OBDII code P2318 Chrysler indicate?

- The code P2318 indicates a problem with the ignition coil 'G' primary control circuit being low.

3. What are the possible causes of OBDII code P2318 in a Chrysler vehicle?

- 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).

4. How can I diagnose the issue causing OBDII code P2318 in my Chrysler?

- Diagnosis typically involves inspecting the ignition coil, checking the wiring and connectors for damage, and using a scan tool to read live data and monitor the ignition system.

5. Can driving with OBDII code P2318 present cause further damage to my Chrysler vehicle?

- Continuing to drive with code P2318 can potentially lead to more severe engine damage, reduced fuel efficiency, and increased emissions.

6. How can I repair OBDII code P2318 in my Chrysler vehicle?

- Repairing the issue may involve replacing the faulty ignition coil, repairing damaged wiring or connectors, or reprogramming the ECM if necessary.

7. Are there any preventative maintenance tips to avoid OBDII code P2318 in a Chrysler?

- Regularly inspecting and maintaining the ignition system components, such as the ignition coils and wiring, can help prevent issues that trigger code P2318.

8. Can a DIY enthusiast fix OBDII code P2318 in a Chrysler at home?

- Depending on the specific cause, a DIY enthusiast with the necessary tools and knowledge may be able to diagnose and repair code P2318, but professional help is recommended for complex issues.

9. Will resetting the check engine light clear OBDII code P2318 in a Chrysler?

- Resetting the check engine light may temporarily clear the code, but it will return if the underlying issue causing code P2318 is not resolved.

10. Is it safe to drive my Chrysler with OBDII code P2318 if the symptoms are not severe?

- It is not recommended to drive the vehicle with code P2318, as unresolved ignition system issues can lead to more significant problems and potential safety hazards.