Engine-CodesGeneric – P0828

P0828 Code - Up and Down Shift Switch Circuit High

Quick Answer

The diagnostic trouble code P0828 indicates a problem with the up and down shift switch circuit being detected as high. Common causes include Faulty wiring or connectors in the up and down shift switch circuit, Malfunctioning up and down shift switch, Issues with the transmission control module (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
P0828 indicates Up and Down Shift Switch Circuit High.
Common causes
Common causes include Faulty wiring or connectors in the up and down shift switch circuit, Malfunctioning up and down shift switch, Issues with the transmission control module (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 13, 2024
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Code P0828 Description

The diagnostic trouble code P0828 indicates a problem with the up and down shift switch circuit being detected as high. This code is typically found in vehicles with automatic transmissions. The up and down shift switch is responsible for sending signals to the transmission control module (TCM) to indicate when the driver is requesting an upshift or downshift. When the circuit is detected as high, it means that the voltage in the circuit is higher than the specified range, indicating a malfunction.

OBDII Code P0828 - Up and Down Shift Switch Circuit High
P0828 Code - Up and Down Shift Switch Circuit High

Common Causes of P0828

  1. Faulty wiring or connectors in the up and down shift switch circuit
  2. Malfunctioning up and down shift switch
  3. Issues with the transmission control module (TCM)
  4. Electrical problems such as a short circuit or open circuit
  5. Water or corrosion damage to the circuit components

Symptoms of P0828

  1. Erratic shifting
  2. Harsh shifting
  3. Transmission getting stuck in a specific gear
  4. Poor acceleration
  5. Reduced fuel efficiency

How to Fix P0828

  1. Begin by conducting a thorough inspection of the up and down shift switch circuit, including checking for any damaged wiring or connectors.
  2. Test the up and down shift switch to determine if it is functioning correctly. Replace the switch if necessary.
  3. Check the transmission control module (TCM) for any faults or errors. Reset or replace the TCM as needed.
  4. Clear the diagnostic trouble codes from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, consult a professional mechanic or dealership for further diagnosis and repair.

Cost to Fix P0828

The typical repair costs for addressing the P0828 code can vary depending on the specific cause of the issue. In general, the cost of parts such as the up and down shift switch or TCM can range from $100 to $500. Labor costs at auto repair shops typically range from $80 to $150 per hour. The total cost of repairs for this issue could range from $200 to $1000 or more, depending on the extent of the problem and the necessary repairs. It is advisable to obtain a detailed estimate from a qualified mechanic or repair shop to determine the exact cost for your vehicle.

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Code P0828 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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