AutoCodes – Chevrolet – P2315 Chevrolet

P2315 Chevrolet Code - Ignition Coil 6 Control Circuit Low Voltage

Quick Answer

The ignition system on this engine uses ignition coils with integrated power transistors. 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 Chevrolet indicates Ignition Coil 6 Control Circuit Low Voltage.
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 1,526

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 Jul 31, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2315 Chevrolet Description

The ignition system on this engine uses ignition coils with integrated power transistors. The Engine Control Module (ECM) controls the spark event for each cylinder through individual ignition coil control circuits. When the ECM commands the ignition control circuit On, electrical current flows through the primary winding of the ignition coil, creating a magnetic field. When a spark event is requested, the ECM commands the ignition control circuit Off, interrupting current flow through the primary winding. The collapsing magnetic field created by the primary winding induces a high voltage in the secondary winding, which is connected to the spark plugs. The Diagnostic Trouble Code (DTC) will be set when the control circuit commanded by the ECM state does not match the actual state.

OBDII Code P2315 Chevrolet - Ignition Coil 6 Control Circuit Low Voltage - AutoCodes.com — P2315 Chevrolet Code - Ignition Coil 6 Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2315 Chevrolet?

Faulty Ignition Coil 6
Ignition Coil 6 harness is open or shorted
Ignition Coil 6 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2315 Chevrolet?

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 Chevrolet 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 P2315 Chevrolet code?

Need more information on how to fix the P2315 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2315 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P2315 2014 Chevrolet Silverado — Ignition Coil 6 Control Circuit Low Voltage
P2315 2015 Chevrolet Silverado — Ignition Coil 6 Control Circuit Low Voltage
P2315 2016 Chevrolet Silverado — Ignition Coil 6 Control Circuit Low Voltage
P2315 2017 Chevrolet Silverado — Ignition Coil 6 Control Circuit Low Voltage
P2315 2018 Chevrolet Silverado — Ignition Coil 6 Control Circuit Low Voltage

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 Chevrolet Code

1. What does the OBDII code P2315 mean on a Chevrolet?

P2315 indicates a low voltage issue in the ignition coil 6 control circuit, which can affect engine performance.

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

Symptoms include engine misfires, rough idling, poor acceleration, reduced fuel efficiency, and an illuminated check engine light.

3. What causes the P2315 code to appear on a Chevrolet?

Common causes include a faulty ignition coil, damaged wiring or connectors in the ignition coil 6 circuit, a bad spark plug, or a malfunctioning engine control module (ECM).

4. Can I drive my Chevrolet with the P2315 code?

Driving with this code is not recommended, as it can lead to engine misfires and potentially cause damage to the catalytic converter over time.

5. How do you diagnose the P2315 code on a Chevrolet?

A technician will inspect the ignition coil 6, check for damaged wiring or loose connectors, test the coilâ€™s resistance, and verify proper voltage and ground signals.

6. How can I fix the P2315 code on a Chevrolet?

Repairs may include replacing the ignition coil 6, repairing damaged wires or connectors, replacing the spark plug for cylinder 6, or reprogramming/updating the ECM if necessary.

7. How much does it cost to fix the P2315 code on a Chevrolet?

Repair costs vary but typically range from $150 to $400, depending on whether the ignition coil, wiring, or ECM needs replacement or repair.

8. Can a bad spark plug cause the P2315 code on a Chevrolet?

Yes, a worn or damaged spark plug for cylinder 6 can cause ignition coil control circuit issues and trigger the P2315 code.

9. How can I prevent the P2315 code from recurring on my Chevrolet?

Regularly inspect and replace spark plugs and ignition coils as needed, and ensure wiring and connectors are in good condition.

10. Does the P2315 code require ECM replacement on a Chevrolet?

ECM replacement is rare but may be necessary if all other components in the ignition coil 6 circuit are functioning correctly and the ECM is confirmed to be faulty.