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P0510 Infiniti Code - Closed Throttle Position Switch Fault

Quick Answer

The P0510 code in Infiniti vehicles indicates a fault with the Closed Throttle Position Switch. Common causes include Faulty Closed Throttle Position Switch: The switch itself may be defective, causing inaccurate readings to be sent to the ECM, Wiring issues: Damage or corrosion in the wiring harness connected to the switch can disrupt the signal transmission, Poor connection: Loose or poor connections between the switch and the ECM can lead to communication problems. 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
P0510 Infiniti indicates Closed Throttle Position Switch Fault.
Common causes
Common causes include Faulty Closed Throttle Position Switch: The switch itself may be defective, causing inaccurate readings to be sent to the ECM, Wiring issues: Damage or corrosion in the wiring harness connected to the switch can disrupt the signal transmission, Poor connection: Loose or poor connections between the switch and the ECM can lead to communication problems.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P0510 Infiniti Description

The P0510 code in Infiniti vehicles indicates a fault with the Closed Throttle Position Switch. This switch is an important component of the throttle control system, responsible for communicating the position of the throttle to the engine control module (ECM). The ECM uses this information to adjust fuel delivery and ignition timing, ensuring optimal engine performance and efficiency.

OBDII Code P0510 Infiniti - Closed Throttle Position Switch Fault
P0510 Infiniti Code - Closed Throttle Position Switch Fault

Common Causes of P0510 Infiniti

  1. Faulty Closed Throttle Position Switch: The switch itself may be defective, causing inaccurate readings to be sent to the ECM.
  2. Wiring issues: Damage or corrosion in the wiring harness connected to the switch can disrupt the signal transmission.
  3. Poor connection: Loose or poor connections between the switch and the ECM can lead to communication problems.
  4. Throttle body issues: Problems with the throttle body assembly, such as binding or sticking, can affect the switch's operation.

Symptoms of P0510 Infiniti

  1. Erratic idling: The vehicle may experience unstable idling, with the engine speed fluctuating unexpectedly.
  2. Hesitation: The vehicle may hesitate or struggle to accelerate smoothly, especially when starting from a stop.
  3. Stalling: The engine may stall or shut off suddenly, particularly when coming to a stop or decelerating.
  4. Lack of power: The vehicle may feel underpowered or sluggish, especially during acceleration or when climbing hills.
  5. Check Engine Light: The illumination of the Check Engine Light on the dashboard is a common symptom associated with this code.

How to Fix P0510 Infiniti

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the trouble codes and identify the specific problem with the Closed Throttle Position Switch.
  2. Inspect the switch: Check the condition of the switch for any visible damage or signs of wear. Test its functionality using a multimeter.
  3. Check wiring and connections: Inspect the wiring harness for any damage, corrosion, or loose connections. Repair or replace as needed.
  4. Replace the switch: If the Closed Throttle Position Switch is determined to be faulty, replace it with a new, OEM-quality part.
  5. Clear codes and test: After completing the repair, clear the trouble codes from the ECM memory and test the vehicle to ensure the issue has been resolved.

Cost to Fix P0510 Infiniti

The cost of repairing a Closed Throttle Position Switch fault in an Infiniti vehicle can vary depending on the specific model, the extent of the issue, and the labor rates at the auto repair shop. Typically, the price range for this repair can be between $150 and $400, including parts and labor. It's important to factor in additional costs for diagnostic time, any necessary wiring repairs, and the price of the replacement switch. Keep in mind that rates may vary based on location and the expertise of the technician performing the repair. It's advisable to obtain quotes from multiple shops to compare prices and ensure a fair estimate.

What does this mean?

Tech Notes for P0510 Infiniti

Adjusting the Throttle Position Switch (TPS) may take care of the problem, if the problem persists the TPS may need to be replaced.

When is the Code Detected?

Malfunction is detected when battery voltage from the closed throttle position switch is sent to ECM with the throttle valve opened.

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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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