P1743 Chevrolet Code - Throttle Position Invalid Signal
Quick Answer
The P1743 Chevrolet diagnostic trouble code indicates that there is an issue with the throttle position sensor (TPS) signal being invalid. Common causes include Faulty throttle position sensor, Damaged or corroded wiring connected to the throttle position sensor, Loose or poor connections between the sensor and 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
- P1743 Chevrolet indicates Throttle Position Invalid Signal.
- Common causes
- Common causes include Faulty throttle position sensor, Damaged or corroded wiring connected to the throttle position sensor, Loose or poor connections between the sensor and 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.
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Code P1743 Chevrolet Description
The P1743 Chevrolet diagnostic trouble code indicates that there is an issue with the throttle position sensor (TPS) signal being invalid. The throttle position sensor is a crucial component of the vehicle's electronic throttle control system, as it monitors the position of the throttle valve and sends this information to the engine control module (ECM). The ECM uses this data to adjust the air-fuel mixture and control the engine's performance.
Common Causes of P1743 Chevrolet
- Faulty throttle position sensor.
- Damaged or corroded wiring connected to the throttle position sensor.
- Loose or poor connections between the sensor and ECM.
- ECM malfunction or software issues.
- Environmental factors such as water or debris entering the sensor area.
Symptoms of P1743 Chevrolet
- Poor acceleration or lack of response when pressing the gas pedal.
- Engine stalling or hesitation when accelerating.
- Rough idling or unstable engine RPM.
- Reduced fuel efficiency.
- Vehicle going into limp mode with limited power.
How to Fix P1743 Chevrolet
- Begin by conducting a thorough inspection of the throttle position sensor and its wiring connections to check for any visible damage or issues.
- Use a multimeter to test the throttle position sensor's voltage output to determine if it is within the manufacturer's specifications.
- If the sensor is faulty, replace it with a new one and ensure proper installation and calibration.
- Check and repair any damaged wiring or connections related to the throttle position sensor.
- Clear the diagnostic trouble code from the ECM memory and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1743 Chevrolet
The cost of repairing a throttle position sensor issue can vary depending on the make and model of the vehicle, as well as the specific components that need to be replaced. On average, the cost of a new throttle position sensor can range from $50 to $200, with additional costs for labor and any other necessary parts. Overall, the total repair cost for addressing a P1743 Chevrolet code could range from $150 to $400, including parts and labor. It is important to consider that labor rates at auto repair shops can vary, so it is recommended to obtain a detailed estimate from a trusted mechanic before proceeding with the repair.
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