Engine-CodesChevrolet – P0068 2015 Chevrolet Silverado

P0068 2015 Chevrolet Silverado Code - Throttle Body Air Flow Performance

Quick Answer

The P0068 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado relates to the throttle body air flow performance. Common causes include Malfunctioning throttle position sensor, Dirty or clogged throttle body, Vacuum leak in the intake system. 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
P0068 2015 Chevrolet Silverado indicates Throttle Body Air Flow Performance.
Common causes
Common causes include Malfunctioning throttle position sensor, Dirty or clogged throttle body, Vacuum leak in the intake system.
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 P0068 2015 Chevrolet Silverado Description

The P0068 diagnostic trouble code (DTC) for a 2015 Chevrolet Silverado relates to the throttle body air flow performance. This code indicates that there is a discrepancy between the actual airflow entering the engine and the expected airflow as determined by the throttle position sensor. The throttle body is a critical component that controls the amount of air entering the engine, which is essential for proper combustion and engine performance. When this system is not functioning correctly, it can lead to a variety of issues that affect the vehicle's overall performance and drivability.

OBDII Code P0068 2015 Chevrolet Silverado - Throttle Body Air Flow Performance
P0068 2015 Chevrolet Silverado Code - Throttle Body Air Flow Performance

Common Causes of P0068 2015 Chevrolet Silverado

  • Malfunctioning throttle position sensor
  • Dirty or clogged throttle body
  • Vacuum leak in the intake system
  • Faulty mass airflow sensor
  • Wiring or electrical issues

Symptoms of P0068 2015 Chevrolet Silverado

  • Check engine light illuminated on the dashboard
  • Reduced engine performance
  • Rough idling or stalling
  • Poor acceleration
  • Decreased fuel efficiency

How to Fix P0068 2015 Chevrolet Silverado

  1. Diagnose the issue using a scan tool to confirm the P0068 code and identify the specific component causing the problem.
  2. Inspect the throttle body, throttle position sensor, mass airflow sensor, and intake system for any signs of damage, dirt, or wear.
  3. Clean or replace the throttle body and throttle position sensor as needed to ensure proper airflow regulation.
  4. Repair any vacuum leaks in the intake system and address any wiring or electrical issues that may be contributing to the problem.
  5. Clear the code and test drive the vehicle to ensure that the issue has been resolved and the check engine light does not reappear.

Cost to Fix P0068 2015 Chevrolet Silverado

The typical repair costs for addressing a P0068 code on a 2015 Chevrolet Silverado can vary depending on the specific components that need to be repaired or replaced. In general, the cost of parts such as a throttle body, throttle position sensor, or mass airflow sensor can range from $100 to $300 each. Labor costs at auto repair shops typically range from $80 to $150 per hour, and the total cost of labor for diagnosing and repairing this issue may be around $200 to $500. Overall, the total repair cost for a P0068 code on a Chevrolet Silverado is likely to be in the range of $300 to $800, but it is advisable to check with local auto repair shops for a more accurate estimate based on your specific vehicle and location.

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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 P0068 2015 Chevrolet Silverado Code

What does the OBDII code P0068 mean for a 2015 Chevrolet Silverado?

The P0068 code indicates a problem with the throttle body air flow performance, suggesting that the engine control module (ECM) has detected a discrepancy between the throttle position and the mass air flow (MAF) readings.

What are common symptoms of the P0068 code in a Chevrolet Silverado?

Common symptoms include reduced engine power, poor acceleration, an illuminated check engine light, and possible stalling or hesitation during acceleration.

What could cause the P0068 code to trigger?

Possible causes include a faulty throttle body, a malfunctioning mass air flow sensor, vacuum leaks, wiring issues, or a dirty throttle body that is not opening or closing properly.

How can I diagnose the P0068 code?

To diagnose the P0068 code, start by visually inspecting the throttle body and related sensors for damage or dirt. Use a scan tool to check for other codes, monitor live data for throttle position and MAF readings, and look for possible vacuum leaks.

What repairs are typically needed to fix the P0068 code?

Common repairs may involve cleaning or replacing the throttle body, replacing a faulty mass air flow sensor, fixing vacuum leaks, or repairing damaged wiring or connectors.

Can I drive my Chevrolet Silverado with the P0068 code?

While it might be possible to drive the vehicle, it's not recommended as it could lead to reduced engine performance and potential further damage if the underlying issue is not addressed.

Is the P0068 code serious?

Yes, the P0068 code can indicate a serious issue affecting engine performance and drivability, so it should be diagnosed and repaired as soon as possible.

How much does it typically cost to repair the issues related to the P0068 code?

Repair costs can vary widely depending on the specific cause, but they usually range from $100 to $500, including parts and labor, particularly if it involves cleaning or replacing the throttle body or MAF sensor.

Will clearing the P0068 code fix the problem?

Clearing the code may temporarily turn off the check engine light, but if the underlying issue is not resolved, the code will likely reappear after driving the vehicle.

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