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Engine-Codes – Generic – P0227

P0227 Code - Throttle/Pedal Position Sensor/Switch 'C' Circuit Low Input

Quick Answer

The diagnostic trouble code P0227 indicates that there is a low input signal detected from the throttle/pedal position sensor or switch 'C'. Common causes include Faulty throttle position sensor, Damaged wiring or connectors, Malfunctioning ECM. 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
P0227 indicates Throttle/Pedal Position Sensor/Switch 'C' Circuit Low Input.
Common causes
Common causes include Faulty throttle position sensor, Damaged wiring or connectors, Malfunctioning ECM.
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 15, 2024
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Code P0227 Description

The diagnostic trouble code P0227 indicates that there is a low input signal detected from the throttle/pedal position sensor or switch 'C'. This sensor is responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM) to adjust the air-fuel mixture and control the engine's performance. When the sensor detects a low input signal, it means that the voltage signal is below the expected range, which can lead to various performance issues in the vehicle.

OBDII Code P0227 - Throttle/Pedal Position Sensor/Switch 'C' Circuit Low Input
P0227 Code - Throttle/Pedal Position Sensor/Switch 'C' Circuit Low Input

Common Causes of P0227

  1. Faulty throttle position sensor
  2. Damaged wiring or connectors
  3. Malfunctioning ECM
  4. Issues with the throttle pedal
  5. Corrosion or debris affecting sensor signal

Symptoms of P0227

  1. Erratic acceleration
  2. Stalling or rough idling
  3. Lack of response when pressing the throttle pedal
  4. Check Engine Light illuminated
  5. Reduced fuel efficiency

How to Fix P0227

  1. Begin by conducting a thorough inspection of the throttle position sensor, wiring, and connectors to identify any visible damage or corrosion.
  2. Test the throttle position sensor using a multimeter to check for proper voltage output and resistance values.
  3. If the sensor is faulty, replace it with a new OEM or high-quality aftermarket sensor, ensuring proper installation and calibration.
  4. Clear the diagnostic trouble codes from the ECM using a scan tool and perform a test drive to verify that the issue has been resolved.
  5. If the problem persists, further diagnostics may be required to pinpoint the exact cause, such as testing the ECM or throttle pedal for faults.

Cost to Fix P0227

The typical repair costs for addressing a P0227 code can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. This estimate includes the price of a new throttle position sensor, any necessary wiring repairs or replacements, and the labor involved in diagnosing and fixing the problem. It's important to note that the actual cost may vary based on the vehicle's make and model, the location of the repair shop, and the extent of the repairs needed. Additionally, diagnostic time and labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. It is recommended to obtain a detailed quote from a trusted mechanic or repair shop to get an accurate estimate for resolving the P0227 code.

When is the Code Detected?

An excessively low voltage from the Throttle Position Sensor (TPS) is sent to Engine Control Module (ECM).

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Code P0227 Information for Specific Makes

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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