AutoCodes – Chevrolet – P1915 Chevrolet

P1915 Chevrolet Code - Internal Mode Switch Start/Wrong Range

Quick Answer

The park/neutral position switch and the 5 Hall Effect switches are internal to and part of the internal mode switch assembly. Common causes include Faulty Transmission Internal Mode Switch, Transmission Internal Mode Switch harness is open or shorted, Transmission Internal Mode Switch 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: P1915 Chevrolet indicates Internal Mode Switch Start/Wrong Range.
Common causes: Common causes include Faulty Transmission Internal Mode Switch, Transmission Internal Mode Switch harness is open or shorted, Transmission Internal Mode Switch 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 16,525

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 Mar 23, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1915 Chevrolet Description

The park/neutral position switch and the 5 Hall Effect switches are internal to and part of the internal mode switch assembly. The park/neutral switch indicates to the engine control module (ECM) if the vehicle is in park/neutral or in a drive gear range. With the ignition ON, the ECM provides 12 V on the park/neutral signal to the park/neutral position switch. A separate ground wire from the park/neutral position switch to the Transmission Control Module (TCM) completes the path to ground. When the gear shift lever in park or neutral, the switch closes and drops the voltage on the signal circuit to 0 V. In this state the engine will start and run. In reverse or drive range the park/neutral switch opens, 12 V is then present on the signal circuit which will inhibit engine starting. The Diagnostic Trouble Code (DTC) will be set when the internal mode switch Park/Neutral circuit does indicate Park or Neutral during engine start.

OBDII Code P1915 Chevrolet - Internal Mode Switch Start/Wrong Range - AutoCodes.com — P1915 Chevrolet Code - Internal Mode Switch Start/Wrong Range

What does this mean?

What are the Possible Causes of the DTC P1915 Chevrolet?

Faulty Transmission Internal Mode Switch
Transmission Internal Mode Switch harness is open or shorted
Transmission Internal Mode Switch circuit poor electrical connection
Faulty Transmission Control Module (TCM)

How to Fix the DTC P1915 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 P1915 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 P1915 Chevrolet code?

Need more information on how to fix the P1915 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1915 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P1915 2014 Chevrolet Silverado — Internal Mode Switch Start/Wrong Range
P1915 2015 Chevrolet Silverado — Internal Mode Switch Start/Wrong Range
P1915 2016 Chevrolet Silverado — Internal Mode Switch Start/Wrong Range
P1915 2017 Chevrolet Silverado — Internal Mode Switch Start/Wrong Range
P1915 2018 Chevrolet Silverado — Internal Mode Switch Start/Wrong Range

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 P1915 Chevrolet Code

1. What are the common symptoms of OBDII code P1915 in a Chevrolet related to the Internal Mode Switch Start/Wrong Range?

- Common symptoms include issues with starting the vehicle, a lack of response when shifting gears, and the inability to engage certain driving modes.

2. What are the possible causes of the OBDII code P1915 in a Chevrolet indicating Internal Mode Switch Start/Wrong Range?

- The code P1915 can be triggered by a faulty internal mode switch, a damaged wiring harness, poor electrical connections, or issues with the transmission control module.

3. How can I diagnose the OBDII code P1915 related to the Internal Mode Switch Start/Wrong Range in my Chevrolet?

- Diagnosis typically involves using a scan tool to retrieve the specific trouble code, inspecting the internal mode switch and related wiring, and testing the transmission control module for proper functionality.

4. Can I still drive my Chevrolet with the OBDII code P1915 indicating Internal Mode Switch Start/Wrong Range?

- It is not recommended to drive the vehicle with this code present, as it can lead to potential safety hazards and further damage to the transmission system.

5. What are some repair tips for addressing OBDII code P1915 in a Chevrolet due to the Internal Mode Switch Start/Wrong Range?

- Repair tips may include replacing the internal mode switch, repairing any damaged wiring, ensuring proper electrical connections, and resetting the transmission control module.

6. How much does it typically cost to repair OBDII code P1915 related to the Internal Mode Switch Start/Wrong Range in a Chevrolet?

- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

7. Can a DIY enthusiast fix the OBDII code P1915 indicating Internal Mode Switch Start/Wrong Range in a Chevrolet?

- While some experienced DIY enthusiasts may be able to diagnose and repair this code, it is recommended to consult a professional mechanic due to the complexity of transmission-related issues.

8. How urgent is it to address the OBDII code P1915 in a Chevrolet caused by the Internal Mode Switch Start/Wrong Range?

- It is advisable to address this code as soon as possible to prevent further damage to the transmission system and ensure the safe operation of the vehicle.

9. Are there any preventive measures to avoid encountering the OBDII code P1915 related to Internal Mode Switch Start/Wrong Range in a Chevrolet?

- Regular vehicle maintenance, including checking for any signs of transmission issues and addressing them promptly, can help prevent the occurrence of this trouble code.

10. Will resetting the OBDII code P1915 in a Chevrolet resolve the issue related to the Internal Mode Switch Start/Wrong Range?

- Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code. Proper diagnosis and repairs are necessary for a permanent solution.