P242D 2017 GMC Sierra Code - Exhaust Gas Temperature Sensor 3 Circuit High Voltage
Quick Answer
The P242D diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to the Exhaust Gas Temperature Sensor 3 Circuit High Voltage. Common causes include Faulty Exhaust Gas Temperature Sensor: The sensor itself may be malfunctioning, causing a high voltage condition in the circuit, Damaged Wiring or Connectors: Wiring or connectors in the sensor circuit may be damaged, leading to a high voltage reading, ECM Malfunction: A malfunctioning ECM can also trigger this code by incorrectly interpreting the sensor data. 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
- P242D 2017 GMC Sierra indicates Exhaust Gas Temperature Sensor 3 Circuit High Voltage.
- Common causes
- Common causes include Faulty Exhaust Gas Temperature Sensor: The sensor itself may be malfunctioning, causing a high voltage condition in the circuit, Damaged Wiring or Connectors: Wiring or connectors in the sensor circuit may be damaged, leading to a high voltage reading, ECM Malfunction: A malfunctioning ECM can also trigger this code by incorrectly interpreting the sensor data.
- 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 P242D 2017 GMC Sierra Description
The P242D diagnostic trouble code (DTC) for a 2017 GMC Sierra refers to the Exhaust Gas Temperature Sensor 3 Circuit High Voltage. This code indicates that there is a high voltage condition detected in the circuit for the exhaust gas temperature sensor 3. The exhaust gas temperature sensor is responsible for monitoring the temperature of the exhaust gases as they exit the engine. This information is crucial for the engine control module (ECM) to adjust fuel delivery and timing to optimize engine performance and emissions.
Common Causes of P242D 2017 GMC Sierra
- Faulty Exhaust Gas Temperature Sensor: The sensor itself may be malfunctioning, causing a high voltage condition in the circuit.
- Damaged Wiring or Connectors: Wiring or connectors in the sensor circuit may be damaged, leading to a high voltage reading.
- ECM Malfunction: A malfunctioning ECM can also trigger this code by incorrectly interpreting the sensor data.
- Exhaust System Leak: A leak in the exhaust system can cause false readings from the sensor, resulting in a high voltage condition.
- Exhaust Gas Temperature Sensor Placement: If the sensor is placed too close to the exhaust manifold, it can lead to higher than normal temperatures and trigger the code.
Symptoms of P242D 2017 GMC Sierra
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
- Reduced Power: The vehicle may experience a loss of power or reduced acceleration due to the ECM going into failsafe mode.
- Poor Fuel Efficiency: A high voltage condition in the exhaust gas temperature sensor circuit can lead to inefficient fuel delivery, resulting in decreased fuel efficiency.
- Failed Emissions Test: If the issue is not addressed, the vehicle may fail emissions tests due to increased emissions caused by improper fuel delivery.
- Rough Idle: The engine may exhibit a rough idle or hesitation when running due to the ECM trying to compensate for the high voltage condition.
How to Fix P242D 2017 GMC Sierra
- Diagnostic Scan: Begin by using a diagnostic scan tool to retrieve the specific trouble code and determine the root cause of the high voltage condition.
- Inspect Wiring and Connectors: Check the wiring and connectors in the exhaust gas temperature sensor circuit for any damage or corrosion. Repair or replace as needed.
- Test Exhaust Gas Temperature Sensor: Test the exhaust gas temperature sensor using a multimeter to ensure it is functioning correctly. Replace if necessary.
- Clear Codes and Test Drive: Clear the DTC from the ECM memory and test drive the vehicle to ensure the issue has been resolved.
- Monitor System: After the repair, monitor the exhaust gas temperature sensor readings to ensure they are within the normal range and that the code does not return.
Cost to Fix P242D 2017 GMC Sierra
The typical repair costs for addressing a P242D code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts for replacing an exhaust gas temperature sensor can range from $100 to $200, while labor costs can range from $100 to $200, depending on the shop's hourly rates. Overall, the total repair cost for this issue could range from $200 to $400. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.
Tech Notes for P242D 2017 GMC Sierra
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Frequently Asked Questions about P242D 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code P242D in a 2017 GMC Sierra?
The common symptoms of code P242D include the Check Engine Light illuminating on the dashboard, reduced engine performance, and potential problems with the exhaust system.
2. What does the OBDII code P242D indicate in a 2017 GMC Sierra?
Code P242D indicates a high voltage condition in the Exhaust Gas Temperature Sensor 3 circuit of a 2017 GMC Sierra, signaling a potential issue with the sensor or its wiring.
3. What are the possible causes of OBDII code P242D in a 2017 GMC Sierra?
Possible causes of code P242D in a 2017 GMC Sierra include a faulty Exhaust Gas Temperature Sensor 3, damaged wiring or connectors related to the sensor, or issues with the sensor circuit.
4. How can I diagnose and repair OBDII code P242D in my 2017 GMC Sierra?
Diagnosing and repairing code P242D involves checking the Exhaust Gas Temperature Sensor 3 and its circuit for faults, testing the sensor's resistance, inspecting the wiring for damage, and replacing any faulty components as needed.
5. Can I continue driving my 2017 GMC Sierra with OBDII code P242D?
It is generally not recommended to continue driving a vehicle with an active OBDII code like P242D, as it can lead to potential engine or exhaust system damage. It is advisable to address the issue promptly.
6. How much does it typically cost to repair OBDII code P242D in a 2017 GMC Sierra?
The cost to repair code P242D in a 2017 GMC Sierra can vary depending on the exact cause of the issue, but it may involve expenses for parts such as the sensor, wiring repairs, and labor charges from a mechanic.
7. Is it possible to reset OBDII code P242D in a 2017 GMC Sierra without repairing the issue?
While you can clear the code using an OBDII scanner, it is essential to diagnose and fix the underlying problem triggering code P242D in a 2017 GMC Sierra to prevent recurring issues.
8. Can a DIY enthusiast repair OBDII code P242D in a 2017 GMC Sierra?
Depending on your automotive skills and tools, you may be able to diagnose and repair code P242D in a 2017 GMC Sierra as it involves sensor and wiring checks. However, professional assistance is recommended for accurate diagnosis.
9. Are there any recalls or technical service bulletins related to OBDII code P242D in a 2017 GMC Sierra?
It is advisable to check with authorized GMC service centers or online databases for any recalls or technical service bulletins specific to OBDII code P242D in a 2017 GMC Sierra to stay informed about related issues.
10. How can I prevent OBDII code P242D from occurring in my 2017 GMC Sierra in the future?
Regular maintenance, including checking the condition of sensors and wiring in the exhaust system, can help prevent issues like code P242D in a 2017 GMC Sierra. Additionally, avoiding rough driving and ensuring timely repairs can contribute to preventing this code.
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