Engine-CodesLexus – P0758 Lexus

P0758 Lexus Code - Shift Solenoid 'B' Electrical Malfunction

Quick Answer

The P0758 diagnostic trouble code refers to a Shift Solenoid 'B' Electrical Malfunction in a Lexus vehicle. Common causes include Faulty shift solenoid 'B', Wiring issues in the shift solenoid circuit, Malfunctioning 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
P0758 Lexus indicates Shift Solenoid 'B' Electrical Malfunction.
Common causes
Common causes include Faulty shift solenoid 'B', Wiring issues in the shift solenoid circuit, Malfunctioning 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 06, 2024
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Code P0758 Lexus Description

The P0758 diagnostic trouble code refers to a Shift Solenoid 'B' Electrical Malfunction in a Lexus vehicle. This code indicates that the Transmission Control Module (TCM) has detected an electrical issue with the shift solenoid 'B' circuit. The shift solenoids are responsible for controlling the flow of transmission fluid, which in turn controls the gear shifting process in an automatic transmission.

OBDII Code P0758 Lexus - Shift Solenoid 'B' Electrical Malfunction
P0758 Lexus Code - Shift Solenoid 'B' Electrical Malfunction

Common Causes of P0758 Lexus

  1. Faulty shift solenoid 'B'
  2. Wiring issues in the shift solenoid circuit
  3. Malfunctioning Transmission Control Module (TCM)
  4. Low transmission fluid level
  5. Electrical issues such as blown fuses or corroded connectors

Symptoms of P0758 Lexus

  1. Harsh or delayed shifting
  2. Erratic shifting patterns
  3. Inability to shift gears
  4. Poor acceleration
  5. Decreased fuel efficiency

How to Fix P0758 Lexus

  1. Diagnose the issue by using a scan tool to retrieve the trouble code and inspect the shift solenoid 'B' circuit.
  2. Inspect the wiring and connectors for any damage or corrosion. Repair or replace as necessary.
  3. Test the shift solenoid 'B' for proper operation. Replace if found to be faulty.
  4. Clear the trouble code from the TCM memory and test drive the vehicle to ensure proper shifting.
  5. Perform a transmission fluid flush and refill if needed.

Cost to Fix P0758 Lexus

The typical repair costs for a Shift Solenoid 'B' Electrical Malfunction in a Lexus vehicle can range from $200 to $500, including parts and labor. However, it's important to note that the 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. Rates may be higher at dealerships or metropolitan areas, while independent shops may charge less. It's advisable to check local rates for a more accurate estimate.

When is the Code Detected?

The P0758 code is detected when the gear required by the ECM does not match the actual gear when vehicle is driven.

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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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