Engine-CodesBuick – P0705 Buick

P0705 Buick Code - Transmission Range Sensor Circuit Malfunction

Quick Answer

The P0705 Buick code indicates a Transmission Range Sensor Circuit Malfunction. Common causes include Faulty transmission range sensor, Damaged or corroded wiring in the sensor circuit, Loose or disconnected connectors in the circuit. 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
P0705 Buick indicates Transmission Range Sensor Circuit Malfunction.
Common causes
Common causes include Faulty transmission range sensor, Damaged or corroded wiring in the sensor circuit, Loose or disconnected connectors in the circuit.
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 12, 2024
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Code P0705 Buick Description

The P0705 Buick code indicates a Transmission Range Sensor Circuit Malfunction. This means that the vehicle's transmission range sensor, also known as the neutral safety switch, is experiencing an issue with its circuit. The transmission range sensor is responsible for detecting the position of the gear shift lever and sending this information to the vehicle's engine control module (ECM). This allows the ECM to determine the appropriate gear for the vehicle to be in and adjust engine functions accordingly.

OBDII Code P0705 Buick - Transmission Range Sensor Circuit Malfunction
P0705 Buick Code - Transmission Range Sensor Circuit Malfunction

Common Causes of P0705 Buick

  1. Faulty transmission range sensor
  2. Damaged or corroded wiring in the sensor circuit
  3. Loose or disconnected connectors in the circuit
  4. Malfunctioning ECM
  5. Exposure to moisture or debris causing sensor malfunction

Symptoms of P0705 Buick

  1. Difficulty shifting gears or inability to shift into specific gears
  2. Harsh or delayed shifting
  3. Engine stalling when shifting gears
  4. Inability to start the vehicle
  5. Check Engine Light illuminated on the dashboard

How to Fix P0705 Buick

  1. Begin by diagnosing the exact cause of the transmission range sensor circuit malfunction using a scan tool to retrieve the trouble codes.
  2. Inspect the wiring and connectors in the circuit for any damage, corrosion, or loose connections. Repair or replace as necessary.
  3. Test the transmission range sensor for proper operation using a multimeter to check for continuity and resistance.
  4. If the sensor is found to be faulty, replace it with a new one following the manufacturer's guidelines.
  5. Clear the trouble codes from the ECM memory and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0705 Buick

The typical repair costs for a P0705 Buick code can range from $200 to $500, including parts and labor. However, it's essential to note that specific diagnosis time and labor rates at auto repair shops can vary depending on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, but rates may be higher at dealerships or in metropolitan areas. Independent shops often offer lower labor rates. To get a more accurate estimate, it's recommended to check with local repair shops.

When is the Code Detected?

The transmission range switch detects the selector lever position and sends a signal to the Powertrain Control Module (PCM).

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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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