P1743 Cadillac Code - Throttle Position Invalid Signal
Quick Answer
The P1743 diagnostic trouble code for Cadillac vehicles indicates a Throttle Position Invalid Signal. Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, 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
- P1743 Cadillac indicates Throttle Position Invalid Signal.
- Common causes
- Common causes include Faulty throttle position sensor, Damaged wiring or connectors in the TPS circuit, 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.
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Code P1743 Cadillac Description
The P1743 diagnostic trouble code for Cadillac vehicles indicates a Throttle Position Invalid Signal. This means that the Engine Control Module (ECM) has detected a discrepancy between the actual position of the throttle and the position that the ECM is commanding. The throttle position sensor (TPS) is responsible for informing the ECM about the angle of the throttle plate, which is crucial for regulating the air-fuel mixture and the overall performance of the engine.
Common Causes of P1743 Cadillac
- Faulty throttle position sensor
- Damaged wiring or connectors in the TPS circuit
- Malfunctioning ECM
- Mechanical issue with the throttle body
- Corrosion or debris affecting sensor readings
Symptoms of P1743 Cadillac
- Hesitation or lack of response when accelerating
- Rough idling or stalling
- Poor fuel efficiency
- Check Engine Light illuminated
- Inability to start the engine
How to Fix P1743 Cadillac
- Perform a thorough inspection of the throttle position sensor and its wiring to check for any visible damage or corrosion.
- Test the throttle position sensor using a multimeter to verify its functionality and accuracy.
- Check the ECM for any fault codes related to the TPS and reset them if necessary.
- Clean the throttle body and throttle plate to ensure smooth operation and accurate readings.
- If the throttle position sensor is found to be faulty, replace it with a new, OEM-quality part.
Cost to Fix P1743 Cadillac
The typical repair costs for addressing a Throttle Position Invalid Signal code in a Cadillac vehicle can range from $150 to $500, including parts and labor. However, actual costs may vary based on factors such as the specific model of the Cadillac, the location of the repair shop, and the extent of the repairs needed. It is recommended to consult with a qualified mechanic for a more accurate estimate based on the individual circumstances. Keep in mind that diagnosis time and labor rates can vary between different auto repair shops.
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