Engine-CodesAcura – P1242 Acura

P1242 Acura Code - Throttle Valve Control Motor Circuit 2 Malfunction

Quick Answer

The P1242 diagnostic trouble code (DTC) for Acura vehicles indicates a malfunction in the Throttle Valve Control Motor Circuit 2. Common causes include Faulty throttle valve control motor, Wiring issues or poor connections in the throttle valve control motor circuit, Malfunctioning throttle position sensor. 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
P1242 Acura indicates Throttle Valve Control Motor Circuit 2 Malfunction.
Common causes
Common causes include Faulty throttle valve control motor, Wiring issues or poor connections in the throttle valve control motor circuit, Malfunctioning throttle position sensor.
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 17, 2024
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Code P1242 Acura Description

The P1242 diagnostic trouble code (DTC) for Acura vehicles indicates a malfunction in the Throttle Valve Control Motor Circuit 2. This code specifically points to an issue with the electronic throttle control system, which plays a crucial role in regulating the airflow into the engine. The throttle valve control motor is responsible for adjusting the throttle valve position based on driver input and various sensor readings. When this circuit malfunctions, it can lead to erratic throttle responses, poor engine performance, and even stalling.

OBDII Code P1242 Acura - Throttle Valve Control Motor Circuit 2 Malfunction
P1242 Acura Code - Throttle Valve Control Motor Circuit 2 Malfunction

Common Causes of P1242 Acura

  1. Faulty throttle valve control motor.
  2. Wiring issues or poor connections in the throttle valve control motor circuit.
  3. Malfunctioning throttle position sensor.
  4. ECM software or hardware failure.
  5. Environmental factors such as moisture or corrosion affecting the components.

Symptoms of P1242 Acura

  1. Erratic throttle response or unresponsive throttle pedal.
  2. Engine hesitation or surging during acceleration.
  3. Rough idling or stalling at idle.
  4. Reduced engine power or performance.
  5. Illumination of the Check Engine Light on the dashboard.

How to Fix P1242 Acura

  1. Begin by conducting a thorough diagnostic scan to retrieve the specific trouble codes and pinpoint the issue.
  2. Inspect the throttle valve control motor, wiring, and connections for any signs of damage or wear.
  3. Test the throttle position sensor and ECM for proper functionality.
  4. Replace any faulty components, such as the throttle valve control motor or sensor, and repair any damaged wiring.
  5. Clear the DTCs from the vehicle's memory and perform a test drive to ensure that the issue has been resolved.

Cost to Fix P1242 Acura

The typical repair costs for addressing a Throttle Valve Control Motor Circuit 2 Malfunction (P1242) in an Acura vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging between $80 and $150. It's recommended to obtain quotes from multiple shops to get a more accurate estimate based on your location and vehicle 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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