Engine-CodesHyundai – P1171 Hyundai

P1171 Hyundai Code - Electronic Throttle System Open

Quick Answer

The P1171 Hyundai code indicates a problem with the electronic throttle system being open. Common causes include Faulty throttle position sensor, Damaged throttle body, Wiring issues or electrical connections. 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
P1171 Hyundai indicates Electronic Throttle System Open.
Common causes
Common causes include Faulty throttle position sensor, Damaged throttle body, Wiring issues or electrical connections.
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 10, 2024
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Code P1171 Hyundai Description

The P1171 Hyundai code indicates a problem with the electronic throttle system being open. The electronic throttle system, also known as throttle-by-wire, is responsible for controlling the amount of air entering the engine, which ultimately affects the vehicle's performance. When the throttle system is open, it means that the throttle valve is not functioning properly, leading to potential issues with acceleration, fuel efficiency, and overall engine performance.

OBDII Code P1171 Hyundai - Electronic Throttle System Open
P1171 Hyundai Code - Electronic Throttle System Open

Common Causes of P1171 Hyundai

  1. Faulty throttle position sensor
  2. Damaged throttle body
  3. Wiring issues or electrical connections
  4. Malfunctioning electronic control module
  5. Vacuum leaks in the intake system

Symptoms of P1171 Hyundai

  1. Poor acceleration or delayed response when pressing the gas pedal
  2. Rough idling or stalling when coming to a stop
  3. Reduced fuel efficiency and increased fuel consumption
  4. Illumination of the check engine light on the dashboard
  5. Unusual engine noises or vibrations

How to Fix P1171 Hyundai

  1. Perform a thorough diagnostic scan to retrieve the specific trouble codes and identify the root cause of the issue.
  2. Inspect the throttle position sensor, throttle body, and wiring connections for any signs of damage or wear.
  3. Clean the throttle body and throttle plate to remove any carbon buildup or debris that may be affecting its operation.
  4. Test the electronic control module and replace if necessary.
  5. Reset the electronic throttle system and perform a test drive to ensure proper functionality.

Cost to Fix P1171 Hyundai

The typical repair costs for addressing the P1171 Hyundai code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, you can expect to pay anywhere from $200 to $500 for parts and labor to resolve this problem. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your vehicle make and model.

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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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