Engine-CodesBuick – P1835 Buick

P1835 Buick Code - Kick-Down Switch Circuit

Quick Answer

The P1835 diagnostic trouble code (DTC) in a Buick indicates an issue with the kick-down switch circuit. Common causes include Faulty kick-down switch, Damaged wiring or connectors in the kick-down switch circuit, Corrosion or debris affecting the kick-down switch. 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
P1835 Buick indicates Kick-Down Switch Circuit.
Common causes
Common causes include Faulty kick-down switch, Damaged wiring or connectors in the kick-down switch circuit, Corrosion or debris affecting the kick-down switch.
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 P1835 Buick Description

The P1835 diagnostic trouble code (DTC) in a Buick indicates an issue with the kick-down switch circuit. The kick-down switch is a component in the transmission system that allows the driver to downshift when needed for acceleration, passing, or climbing steep grades. When this switch malfunctions or the circuit fails, it can negatively impact the vehicle's performance and drivability.

OBDII Code P1835 Buick - Kick-Down Switch Circuit
P1835 Buick Code - Kick-Down Switch Circuit

Common Causes of P1835 Buick

  1. Faulty kick-down switch
  2. Damaged wiring or connectors in the kick-down switch circuit
  3. Corrosion or debris affecting the kick-down switch
  4. Electronic control module (ECM) issues
  5. Transmission fluid contamination or low fluid levels

Symptoms of P1835 Buick

  1. Delayed or erratic shifting of gears
  2. Difficulty accelerating or reaching higher speeds
  3. Engine revving without corresponding increase in speed
  4. Transmission slipping or jerking
  5. Check Engine Light illuminated on the dashboard

How to Fix P1835 Buick

  1. Begin by connecting a diagnostic scanner to retrieve the specific DTC and confirm the P1835 code related to the kick-down switch circuit.
  2. Inspect the kick-down switch and its wiring for any visible damage, corrosion, or loose connections. Repair or replace any damaged components as necessary.
  3. Test the kick-down switch circuit using a multimeter to check for continuity and proper voltage levels. Replace any faulty components identified during testing.
  4. Clear the DTC from the vehicle's computer memory using the diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to pinpoint the exact cause of the circuit malfunction, such as ECM testing or transmission fluid analysis.

Cost to Fix P1835 Buick

The typical repair costs for addressing the P1835 kick-down switch circuit issue in a Buick can range from $150 to $400, depending on the extent of the repair needed and the cost of parts. This estimate includes labor costs, which can vary based on the shop's hourly rates and the complexity of the repair process. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate based on the specific vehicle and location.

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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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