Engine-CodesAcura – P0815 Acura

P0815 Acura Code - Short In Transmission Gear Selection Switch Upshift/Dowshift Switch Circuit

Quick Answer

The P0815 diagnostic trouble code for Acura vehicles indicates a short in the transmission gear selection switch upshift/dowshift switch circuit. Common causes include Faulty transmission gear selection switch, Short circuit in the wiring harness, Corrosion or damage to electrical connectors. 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 Acura indicates Short In Transmission Gear Selection Switch Upshift/Dowshift Switch Circuit.
Common causes
Common causes include Faulty transmission gear selection switch, Short circuit in the wiring harness, Corrosion or damage to electrical connectors.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code P0815 Acura Description

The P0815 diagnostic trouble code for Acura vehicles indicates a short in the transmission gear selection switch upshift/dowshift switch circuit. This code specifically relates to a malfunction in the switch that controls the upshift and downshift functions of the transmission. The transmission gear selection switch is responsible for sending signals to the vehicle's transmission control module (TCM) to determine the appropriate gear for the vehicle based on driving conditions.

OBDII Code P0815 Acura - Short In Transmission Gear Selection Switch Upshift/Dowshift Switch Circuit
P0815 Acura Code - Short In Transmission Gear Selection Switch Upshift/Dowshift Switch Circuit

Common Causes of P0815 Acura

  1. Faulty transmission gear selection switch
  2. Short circuit in the wiring harness
  3. Corrosion or damage to electrical connectors
  4. Issues with the transmission control module (TCM)
  5. Electrical faults in the vehicle's system

Symptoms of P0815 Acura

  1. Difficulty shifting gears
  2. Transmission getting stuck in a specific gear
  3. Harsh or delayed shifting
  4. Illuminated check engine light
  5. Decreased fuel efficiency

How to Fix P0815 Acura

  1. Diagnose the issue by using a scan tool to retrieve the trouble code and checking the transmission gear selection switch for any visible damage.
  2. Inspect the wiring harness and connectors for any signs of corrosion or damage.
  3. Test the transmission gear selection switch and related components for proper functionality.
  4. Replace the faulty transmission gear selection switch if necessary.
  5. Clear the trouble code from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0815 Acura

The typical repair costs for addressing a P0815 code in an Acura vehicle can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the cost of replacing a transmission gear selection switch can range from $150 to $300, with additional costs for diagnostic time and labor. It is important to note that labor rates at auto repair shops can vary based on location and other factors, so it is recommended to obtain a specific estimate from a trusted mechanic before proceeding with the repair.

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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.

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