Engine-CodesLexus – P0985 Lexus

P0985 Lexus Code - Shift Solenoid 'E' Control Circuit Low

Quick Answer

The P0985 diagnostic trouble code (DTC) for Lexus vehicles refers to an issue with the Shift Solenoid 'E' Control Circuit being detected as low. Common causes include Faulty Shift Solenoid 'E', Wiring or connector issues in the control circuit, Low transmission fluid levels. 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
P0985 Lexus indicates Shift Solenoid 'E' Control Circuit Low.
Common causes
Common causes include Faulty Shift Solenoid 'E', Wiring or connector issues in the control circuit, Low transmission fluid levels.
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 08, 2024
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Code P0985 Lexus Description

The P0985 diagnostic trouble code (DTC) for Lexus vehicles refers to an issue with the Shift Solenoid 'E' Control Circuit being detected as low. This means that there is a problem with the electrical circuit that controls the operation of the Shift Solenoid 'E', which plays a crucial role in the transmission system. The Shift Solenoid 'E' is responsible for regulating the flow of transmission fluid to engage or disengage specific gears in the transmission, allowing the vehicle to shift smoothly between gears.

OBDII Code P0985 Lexus - Shift Solenoid 'E' Control Circuit Low
P0985 Lexus Code - Shift Solenoid 'E' Control Circuit Low

Common Causes of P0985 Lexus

  1. Faulty Shift Solenoid 'E'
  2. Wiring or connector issues in the control circuit
  3. Low transmission fluid levels
  4. Transmission fluid contamination
  5. Internal transmission damage

Symptoms of P0985 Lexus

  1. Harsh or delayed shifting
  2. Inability to shift gears
  3. Transmission slipping
  4. Illuminated check engine light
  5. Limp mode activation

How to Fix P0985 Lexus

  1. Begin by conducting a thorough inspection of the wiring and connectors in the Shift Solenoid 'E' control circuit to check for any damage or loose connections.
  2. Test the Shift Solenoid 'E' to determine if it is functioning correctly. If the solenoid is faulty, it will need to be replaced.
  3. Check the transmission fluid level and condition. Top up the fluid if necessary and replace it if contaminated.
  4. Clear the DTC from the vehicle's computer using a diagnostic scanner.
  5. Test drive the vehicle to ensure that the shifting issues have been resolved.

Cost to Fix P0985 Lexus

The typical repair costs for addressing the P0985 code on a Lexus vehicle can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of replacing a Shift Solenoid 'E' can range from $150 to $300, including parts and labor. Additional costs may be incurred if there are wiring or connector issues that need to be repaired. It is recommended to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the individual circumstances of the vehicle. Keep in mind that labor rates and diagnosis times can vary, so it's advisable to inquire about these factors before proceeding with the repairs.

When is the Code Detected?

Engine Control Module (ECM) detectes an open or shorted condition on the solenoid circuit

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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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