Engine-CodesScion – P0986 Scion

P0986 Scion Code - Shift Solenoid 'E' Control Circuit High

Quick Answer

The P0986 code for Scion vehicles refers to an issue with the Shift Solenoid 'E' control circuit. Common causes include Faulty Shift Solenoid 'E', Damaged or corroded wiring in the control 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
P0986 Scion indicates Shift Solenoid 'E' Control Circuit High.
Common causes
Common causes include Faulty Shift Solenoid 'E', Damaged or corroded wiring in the control 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 11, 2024
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Code P0986 Scion Description

The P0986 code for Scion vehicles refers to an issue with the Shift Solenoid 'E' control circuit. The shift solenoid is responsible for controlling the flow of transmission fluid, which in turn regulates the shifting of gears in the automatic transmission system. When the control circuit for Shift Solenoid 'E' is detected to be high, it means that the voltage signal in the circuit is outside of the normal range, indicating a potential problem with the solenoid's operation.

OBDII Code P0986 Scion - Shift Solenoid 'E' Control Circuit High
P0986 Scion Code - Shift Solenoid 'E' Control Circuit High

Common Causes of P0986 Scion

  1. Faulty Shift Solenoid 'E'
  2. Damaged or corroded wiring in the control circuit
  3. Malfunctioning Transmission Control Module (TCM)
  4. Low transmission fluid levels or contaminated fluid
  5. Electrical issues such as blown fuses or relays in the circuit

Symptoms of P0986 Scion

  1. Erratic shifting or delayed gear changes
  2. Harsh shifting between gears
  3. Transmission slipping or difficulty engaging gears
  4. Illumination of the Check Engine Light
  5. Reduced fuel efficiency due to inefficient gear shifts

How to Fix P0986 Scion

  1. Begin by diagnosing the specific cause of the high voltage in the Shift Solenoid 'E' control circuit using a diagnostic scanner to retrieve the trouble codes and pinpoint the issue.
  2. Inspect the wiring and connectors in the control circuit for any signs of damage, corrosion, or loose connections. Repair or replace any damaged components as needed.
  3. Test the Shift Solenoid 'E' for proper operation by applying voltage to it and checking if it clicks or activates as expected. Replace the solenoid if it fails this test.
  4. Check the transmission fluid level and condition, topping up or replacing it if necessary. Ensure that the correct type of fluid is used for the Scion's transmission.
  5. Clear the trouble codes from the vehicle's system memory, reset the Check Engine Light, and perform a test drive to verify that the issue has been resolved.

Cost to Fix P0986 Scion

The typical repair costs for addressing a Shift Solenoid 'E' control circuit high issue in a Scion vehicle can range from $150 to $400, including parts and labor. However, the final cost may vary depending on the extent of the damage, the specific cause of the issue, and the shop's labor rates. It is advisable to consult with a professional mechanic or auto repair shop to obtain a more accurate estimate based on your vehicle's make and model. Keep in mind that diagnostic time and labor rates can vary, so it's essential to inquire about these factors before proceeding with the repair.

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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