AutoCodes – Chevrolet – P1915 2018 Chevrolet Silverado

P1915 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 410

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Internal Mode Switch Start/Wrong Range - AutoCodes.com — P1915 2018 Chevrolet Silverado Code - Internal Mode Switch Start/Wrong Range

What does this mean?

What are the Possible Causes of the DTC P1915 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?

Need more information on how to fix the P1915 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P1915 2018 Chevrolet Silverado Code

1. What are common symptoms of OBDII code P1915 on a 2018 Chevrolet Silverado related to the Internal Mode Switch Start/Wrong Range?

- Common symptoms include issues with starting the vehicle, incorrect gear indication on the dashboard, and difficulty shifting gears.

2. What could cause the OBDII code P1915 to appear on a 2018 Chevrolet Silverado?

- The code P1915 typically indicates a problem with the internal mode switch, such as a faulty switch, damaged wiring, or poor electrical connections.

3. How can I diagnose the Internal Mode Switch Start/Wrong Range issue triggering OBDII code P1915 on my 2018 Chevrolet Silverado?

- Diagnosing the issue involves checking the internal mode switch for proper operation, inspecting the wiring harness for damage, and testing the electrical connections for continuity.

4. Can a DIY enthusiast repair the Internal Mode Switch Start/Wrong Range problem causing OBDII code P1915 on a 2018 Chevrolet Silverado?

- While some basic troubleshooting steps can be performed by a DIY enthusiast, repairing the internal mode switch or addressing wiring issues may require specialized tools and expertise best handled by a professional mechanic.

5. Is it safe to continue driving a 2018 Chevrolet Silverado with OBDII code P1915 related to the Internal Mode Switch Start/Wrong Range?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to erratic shifting behavior, potential transmission damage, and safety hazards on the road.

6. How much does it typically cost to repair the Internal Mode Switch Start/Wrong Range issue linked to OBDII code P1915 on a 2018 Chevrolet Silverado?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the internal mode switch, repairing damaged wiring, or addressing electrical issues, with costs ranging from a few hundred to over a thousand dollars.

7. Can resetting the OBDII code P1915 on a 2018 Chevrolet Silverado fix the Internal Mode Switch Start/Wrong Range problem?

- Resetting the code may temporarily clear the warning light, but it will not address the underlying issue causing the Internal Mode Switch Start/Wrong Range problem. It is crucial to diagnose and repair the root cause of the code.

8. Are there any preventive maintenance tips to avoid encountering OBDII code P1915 related to the Internal Mode Switch Start/Wrong Range on a 2018 Chevrolet Silverado?

- Regularly inspecting the internal mode switch, checking the wiring harness for damage, and addressing any electrical issues promptly can help prevent the occurrence of code P1915 and related problems.

9. Can extreme weather conditions affect the Internal Mode Switch Start/Wrong Range issue triggering OBDII code P1915 on a 2018 Chevrolet Silverado?

- Extreme temperatures or moisture can potentially impact the internal mode switch and wiring, leading to malfunctions that trigger code P1915. Properly maintaining the vehicle and addressing any weather-related damage promptly can help mitigate these issues.

10. How long does it typically take to repair the Internal Mode Switch Start/Wrong Range issue causing OBDII code P1915 on a 2018 Chevrolet Silverado?

- The repair time can vary based on the extent of the issue and the availability of parts. In general, a professional mechanic may take a few hours to a full day to diagnose and repair the Internal Mode Switch Start/Wrong Range problem triggering code P1915.