AutoCodes – Chevrolet – P0815 Chevrolet

P0815 Chevrolet Code - Upshift Switch Circuit

Quick Answer

The Driver Shift Request (DSR) allows the driver to select the desired range of gears for current driving conditions. Common causes include Faulty Transmission Shift Lever, Transmission Shift Lever harness is open or shorted, Transmission Shift Lever 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: P0815 Chevrolet indicates Upshift Switch Circuit.
Common causes: Common causes include Faulty Transmission Shift Lever, Transmission Shift Lever harness is open or shorted, Transmission Shift Lever 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,755

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 Aug 02, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0815 Chevrolet Description

The Driver Shift Request (DSR) allows the driver to select the desired range of gears for current driving conditions. The DSR shift system is activated when the gear selector is in the manual position. The DSR system is deactivated in all other range positions. Pressing the plus (+) switch once will command the Body Control Module (BCM) to signal the Transmission Control Module (TCM) to upshift to the next high gear. Pressing the minus (−) switch once will command the BCM to signal the TCM to downshift to the next lowest or previous gear. The TCM will not allow a downshift if the transmission is compromised by over-speeding. The automatic transmission manual shift switch is comprised of three different resistor values in series and two switches. The BCM supplies a 12-volt circuit to the automatic transmission manual shift switch. The signal circuit varies the voltage back to the body control module depending on which switch is depressed. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a stuck On Tap Up switch for 1 second in Park or Neutral or the BCM detects a stuck On Tap Up switch for 10 minutes in any forward gear.

OBDII Code P0815 Chevrolet - Upshift Switch Circuit - AutoCodes.com — P0815 Chevrolet Code - Upshift Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P0815 Chevrolet?

Faulty Transmission Shift Lever
Transmission Shift Lever harness is open or shorted
Transmission Shift Lever circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC P0815 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 P0815 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 P0815 Chevrolet code?

Need more information on how to fix the P0815 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0815 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P0815 2014 Chevrolet Silverado — Upshift Switch Circuit
P0815 2015 Chevrolet Silverado — Upshift Switch Circuit
P0815 2016 Chevrolet Silverado — Upshift Switch Circuit
P0815 2017 Chevrolet Silverado — Upshift Switch Circuit
P0815 2018 Chevrolet Silverado — Upshift Switch Circuit

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 P0815 Chevrolet Code

1. What does the OBDII code P0815 mean on a Chevrolet?

The code P0815 indicates a malfunction in the upshift switch circuit, which is responsible for sending signals related to gear shifting.

2. What are the common symptoms of a P0815 code in a Chevrolet?

Symptoms may include the inability to shift gears properly, the transmission being stuck in a specific gear, or the check engine light being illuminated.

3. What causes the P0815 code to appear in a Chevrolet vehicle?

Common causes include a faulty upshift switch, damaged wiring or connectors in the circuit, or issues with the transmission control module (TCM).

4. How is the P0815 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the upshift switch and circuit wiring for damage, and test the switch and TCM for proper functionality.

5. Can you drive a Chevrolet with a P0815 code?

While the vehicle may still be drivable, it could experience gear shifting issues, potentially leading to unsafe driving conditions. It's best to address the issue promptly.

6. How do you fix the P0815 code in a Chevrolet?

Repairs may involve replacing the upshift switch, repairing or replacing damaged wiring, or reprogramming or replacing the transmission control module.

7. Is the P0815 code specific to manual or automatic transmissions?

The P0815 code is typically associated with manual transmissions that use an electronic upshift switch.

8. How much does it cost to repair a P0815 code on a Chevrolet?

Repair costs can vary but typically range from $100 to $500, depending on whether the issue is with the switch, wiring, or TCM.

9. Can a P0815 code cause long-term damage if ignored?

Yes, ignoring the code can lead to further transmission issues or damage to the TCM, potentially resulting in more expensive repairs.

10. Can a dead battery cause the P0815 code on a Chevrolet?

While unlikely, low voltage or a dead battery can sometimes cause transmission-related codes. However, the primary issue is usually related to the upshift switch circuit.