AutoCodes – Volkswagen – P2315 Volkswagen

P2315 Volkswagen Code - Ignition Coil 6 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 6, Ignition Coil 6 harness is open or shorted, Ignition Coil 6 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: P2315 Volkswagen indicates Ignition Coil 6 Primary Control Circuit Low.
Common causes: Common causes include Faulty Ignition Coil 6, Ignition Coil 6 harness is open or shorted, Ignition Coil 6 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 2,727

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 P2315 Volkswagen 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 P2315 code sets when the PCM detects a short to voltage in the circuit.

OBDII Code P2315 Volkswagen - Ignition Coil 6 Primary Control Circuit Low - AutoCodes.com — P2315 Volkswagen Code - Ignition Coil 6 Primary Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2315 Volkswagen?

Faulty Ignition Coil 6
Ignition Coil 6 harness is open or shorted
Ignition Coil 6 circuit poor electrical connection

How to Fix the DTC P2315 Volkswagen?

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 P2315 Volkswagen 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 P2315 Volkswagen Code

1. What does the OBDII code P2315 mean for a Volkswagen?

P2315 indicates an issue with the ignition coil 6 primary control circuit, specifically that the voltage is lower than expected.

2. What are the common symptoms of code P2315 in a Volkswagen?

Symptoms may include engine misfires, rough idling, reduced power, poor fuel efficiency, and the check engine light being illuminated.

3. What causes the P2315 code to appear in a Volkswagen?

Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil circuit, a malfunctioning powertrain control module (PCM), or corroded electrical connections.

4. Can I drive my Volkswagen with a P2315 code?

It is not recommended to drive with a P2315 code, as it can lead to further engine damage, reduced performance, and potential safety risks.

5. How do I diagnose a P2315 code in a Volkswagen?

Diagnosis involves inspecting the ignition coil 6 and its wiring, testing the coil with a multimeter, checking for loose or corroded connections, and scanning the PCM for additional related codes.

6. How is code P2315 typically repaired in a Volkswagen?

Repairs may include replacing the faulty ignition coil, repairing or replacing damaged wiring or connectors, cleaning corroded connections, or reprogramming/replacing the PCM if necessary.

7. How much does it cost to fix the P2315 code in a Volkswagen?

Repair costs vary, but replacing an ignition coil typically costs between $100 and $300, while addressing wiring issues or PCM problems could increase the total cost.

8. Can a bad spark plug cause the P2315 code in a Volkswagen?

While unlikely, a bad spark plug can contribute to misfires and stress the ignition coil, potentially leading to issues in the primary control circuit.

9. How can I prevent the P2315 code from recurring in my Volkswagen?

Regular maintenance, including replacing ignition components like coils and spark plugs as recommended, and inspecting wiring for damage, can help prevent this code.

10. Does a P2315 code always mean the ignition coil is bad?

Not necessarily. The issue could stem from wiring problems, connector issues, or a malfunctioning PCM rather than the ignition coil itself. Proper diagnosis is essential.