AutoCodes – Toyota – P1401 Toyota

P1401 Toyota Code - Sub-Throttle Position Sensor Range/Performance Problem

Quick Answer

P1401 Toyota indicates Sub-Throttle Position Sensor Range/Performance Problem. Common causes include Faulty Sub-Throttle Position Sensor, Sub-Throttle Position Sensor harness is open or shorted, Sub-Throttle Position Sensor circuit poor electrical connection. 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: P1401 Toyota indicates Sub-Throttle Position Sensor Range/Performance Problem.
Common causes: Common causes include Faulty Sub-Throttle Position Sensor, Sub-Throttle Position Sensor harness is open or shorted, Sub-Throttle Position Sensor circuit poor electrical connection.
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.

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Code Popularity 9,200

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 18, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1401 Toyota Description

OBDII Code P1401 Toyota - Sub-Throttle Position Sensor Range/Performance Problem - AutoCodes.com — P1401 Toyota Code - Sub-Throttle Position Sensor Range/Performance Problem

What does this mean?

What are the Possible Causes of the DTC P1401 Toyota?

Faulty Sub-Throttle Position Sensor
Sub-Throttle Position Sensor harness is open or shorted
Sub-Throttle Position Sensor circuit poor electrical connection

How to Fix the DTC P1401 Toyota?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1401 Toyota code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P1401 Toyota code?

Need more information on how to fix the P1401 Toyota code? Get Access to Factory Service Manuals

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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.

Frequently Asked Questions about P1401 Toyota Code

1. What are the common symptoms of OBDII code P1401 in a Toyota related to the Sub-Throttle Position Sensor Range/Performance Problem?

- Common symptoms include rough idling, reduced engine performance, stalling, and the illumination of the Check Engine Light.

2. What are the possible causes of the OBDII code P1401 in a Toyota indicating an issue with the Sub-Throttle Position Sensor?

- The code may be triggered by a faulty sub-throttle position sensor, wiring issues, or a problem with the throttle body assembly.

3. How can I diagnose the Sub-Throttle Position Sensor Range/Performance Problem causing OBDII code P1401 in my Toyota?

- Use a diagnostic scanner to read the code, inspect the sub-throttle position sensor and associated wiring for damage, and perform a throttle body inspection.

4. Is it safe to continue driving my Toyota with the OBDII code P1401 indicating a Sub-Throttle Position Sensor issue?

- It is not recommended to drive the vehicle for an extended period with this issue, as it can lead to further damage and potential safety hazards.

5. Can a DIY enthusiast repair the Sub-Throttle Position Sensor Range/Performance Problem causing OBDII code P1401 in a Toyota?

- While some basic troubleshooting steps can be done at home, it is advisable to seek professional help for accurate diagnosis and repair to ensure the issue is resolved correctly.

6. How much does it typically cost to repair the Sub-Throttle Position Sensor issue triggering OBDII code P1401 in a Toyota?

- The cost of repair can vary depending on the extent of the issue, but it may range from $200 to $500, including parts and labor.

7. Are there any maintenance tips to prevent the recurrence of OBDII code P1401 due to the Sub-Throttle Position Sensor problem in a Toyota?

- Regularly inspect and clean the throttle body, ensure proper wiring connections, and address any engine performance issues promptly to prevent the code from reoccurring.

8. Can a dirty air filter cause the OBDII code P1401 to be triggered in a Toyota with a Sub-Throttle Position Sensor problem?

- While a dirty air filter can affect engine performance, it is not directly related to the Sub-Throttle Position Sensor issue causing OBDII code P1401.

9. Is resetting the Check Engine Light after addressing the Sub-Throttle Position Sensor problem triggering OBDII code P1401 in a Toyota necessary?

- It is recommended to reset the Check Engine Light using a diagnostic scanner after resolving the issue to ensure the system registers the repair and monitors the vehicle's performance accurately.

10. How long does it typically take to repair the Sub-Throttle Position Sensor Range/Performance Problem causing OBDII code P1401 in a Toyota?

- The repair time can vary depending on the exact cause of the issue and the availability of parts, but it may take a few hours to a day for a professional technician to complete the repair.