Engine-CodesGeneric – P2782

P2782 Code - Downshift Switch Circuit Intermittent/Erratic

Quick Answer

The P2782 diagnostic trouble code (DTC) indicates a problem with the downshift switch circuit in the transmission of a vehicle. Common causes include Faulty downshift switch, Damaged wiring or connectors in the circuit, Malfunctioning TCM. 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
P2782 indicates Downshift Switch Circuit Intermittent/Erratic.
Common causes
Common causes include Faulty downshift switch, Damaged wiring or connectors in the circuit, Malfunctioning TCM.
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 09, 2024
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Code P2782 Description

The P2782 diagnostic trouble code (DTC) indicates a problem with the downshift switch circuit in the transmission of a vehicle. The downshift switch is responsible for signaling the transmission control module (TCM) when the driver wants to downshift gears manually. This circuit is intermittent or erratic, meaning that there is a sporadic issue with the signal being sent by the switch.

OBDII Code P2782 - Downshift Switch Circuit Intermittent/Erratic
P2782 Code - Downshift Switch Circuit Intermittent/Erratic

Common Causes of P2782

  1. Faulty downshift switch
  2. Damaged wiring or connectors in the circuit
  3. Malfunctioning TCM
  4. Short in the circuit
  5. Corrosion on electrical connections

Symptoms of P2782

  1. Erratic shifting patterns
  2. Inability to manually downshift gears
  3. Harsh or delayed shifting
  4. Check Engine Light illuminated
  5. Reduced fuel efficiency

How to Fix P2782

  1. Begin by performing a thorough inspection of the downshift switch, wiring, and connectors to identify any visible signs of damage or wear.
  2. Test the downshift switch using a multimeter to check for proper functionality. Replace the switch if it is found to be faulty.
  3. Inspect the wiring and connectors for any signs of corrosion or damage. Repair or replace as necessary.
  4. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to pinpoint the exact cause of the downshift switch circuit intermittent/erratic issue.

Cost to Fix P2782

The typical repair costs for resolving a P2782 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the repair costs for this type of issue can range from $200 to $500, including parts and labor. However, it's important to note that rates can vary significantly based on location, vehicle make and model, and the severity of the problem. It's recommended to obtain quotes from multiple repair shops to ensure a fair price for the repair.

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Code P2782 Information for Specific Makes

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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