P0073 2018 Chevrolet Silverado Code - Ambient Air Temperature Sensor Circuit High Voltage
Quick Answer
The P0073 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado refers to the Ambient Air Temperature Sensor Circuit High Voltage. Common causes include Faulty Ambient Air Temperature Sensor: The sensor itself may be malfunctioning, causing it to send incorrect voltage signals to the ECM, Wiring Issues: Damaged or corroded wiring connections between the sensor and the ECM can disrupt the voltage signal, ECM Malfunction: A problem with the engine control module can also lead to the P0073 code being triggered. 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
- P0073 2018 Chevrolet Silverado indicates Ambient Air Temperature Sensor Circuit High Voltage.
- Common causes
- Common causes include Faulty Ambient Air Temperature Sensor: The sensor itself may be malfunctioning, causing it to send incorrect voltage signals to the ECM, Wiring Issues: Damaged or corroded wiring connections between the sensor and the ECM can disrupt the voltage signal, ECM Malfunction: A problem with the engine control module can also lead to the P0073 code being triggered.
- 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 P0073 2018 Chevrolet Silverado Description
The P0073 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado refers to the Ambient Air Temperature Sensor Circuit High Voltage. This code indicates that the voltage signal from the ambient air temperature sensor is higher than the expected range. The ambient air temperature sensor is a crucial component that measures the outside air temperature and sends this information to the engine control module (ECM) to adjust various engine parameters accordingly.
Common Causes of P0073 2018 Chevrolet Silverado
- Faulty Ambient Air Temperature Sensor: The sensor itself may be malfunctioning, causing it to send incorrect voltage signals to the ECM.
- Wiring Issues: Damaged or corroded wiring connections between the sensor and the ECM can disrupt the voltage signal.
- ECM Malfunction: A problem with the engine control module can also lead to the P0073 code being triggered.
- Environmental Factors: Extreme temperatures or exposure to moisture can affect the sensor's performance.
- Electrical Short: A short circuit in the sensor circuit can cause high voltage readings.
Symptoms of P0073 2018 Chevrolet Silverado
- Check Engine Light: The most common symptom associated with the P0073 code is the illumination of the check engine light on the dashboard.
- Inaccurate Temperature Readings: The vehicle may display incorrect outside temperature readings on the dashboard.
- Poor Fuel Efficiency: Due to incorrect temperature data being sent to the ECM, the engine may run rich or lean, leading to decreased fuel efficiency.
- Rough Idling: The engine may experience rough idling or fluctuations in RPM while at a standstill.
- Stalling: In severe cases, the vehicle may stall or have difficulty starting.
How to Fix P0073 2018 Chevrolet Silverado
- Diagnostic Scan: Use an OBD-II scanner to retrieve the specific DTC and confirm the P0073 code.
- Inspect Sensor and Wiring: Check the ambient air temperature sensor and its wiring for any visible damage or corrosion.
- Replace Sensor: If the sensor is faulty, replace it with a new one and ensure proper installation.
- Repair Wiring: Repair or replace any damaged wiring connections between the sensor and the ECM.
- Clear Codes: After completing the repair, clear the DTCs and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0073 2018 Chevrolet Silverado
The cost of repairing the P0073 code on a 2018 Chevrolet Silverado can vary depending on the specific cause of the issue. Typically, the cost of a new ambient air temperature sensor ranges from $30 to $100, depending on the brand and quality. Labor costs for this repair can range from $80 to $150 per hour, with the total repair time estimated at around 1-2 hours. Therefore, the total cost for parts and labor for resolving the P0073 code can range from $110 to $400. It's important to note that actual repair costs may vary based on the location of the repair shop, the vehicle's make and model, and any additional diagnostic or repair services required.
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Frequently Asked Questions about P0073 2018 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P0073 in a 2018 Chevrolet Silverado?
- Common symptoms include inaccurate ambient air temperature readings on the vehicle's display, potential issues with the HVAC system, and triggering of the check engine light.
2. What can cause the Ambient Air Temperature Sensor Circuit High Voltage code (P0073) in a 2018 Chevrolet Silverado?
- Possible causes include a faulty ambient air temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's ground connection.
3. How serious is the P0073 OBDII trouble code in a 2018 Chevrolet Silverado?
- While the vehicle may still be operational with this code, it is essential to address the underlying issue promptly to prevent potential problems with the vehicle's HVAC system and ensure accurate temperature readings.
4. How can I diagnose the Ambient Air Temperature Sensor Circuit High Voltage code (P0073) in my 2018 Chevrolet Silverado?
- Diagnosis typically involves using a scan tool to read the OBDII code, testing the ambient air temperature sensor's resistance, checking the sensor's wiring and connectors for damage, and verifying the sensor's output voltage.
5. Can I drive my 2018 Chevrolet Silverado with the P0073 trouble code?
- It is generally safe to drive the vehicle with the P0073 code, but it is advisable to address the issue promptly to avoid potential complications with the vehicle's systems.
6. How can I repair the Ambient Air Temperature Sensor Circuit High Voltage code (P0073) in my 2018 Chevrolet Silverado?
- Repair options include replacing the ambient air temperature sensor, repairing damaged wiring or connectors, ensuring a proper ground connection, and clearing the trouble code with a scan tool.
7. Will resetting the OBDII trouble code P0073 in my 2018 Chevrolet Silverado resolve the issue?
- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying problem causing the P0073 code. Proper diagnosis and repair are necessary to address the issue effectively.
8. How much does it cost to fix the P0073 code in a 2018 Chevrolet Silverado?
- The cost of repair can vary depending on the specific cause of the code, but it may involve replacing the ambient air temperature sensor, repairing wiring, or addressing other related issues. Costs can range from relatively inexpensive for a DIY repair to more expensive for professional diagnosis and parts replacement.
9. Can a DIY enthusiast fix the P0073 code in a 2018 Chevrolet Silverado?
- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address the P0073 code by following repair guides, replacing the ambient air temperature sensor, checking wiring, and ensuring proper connections.
10. How long does it take to repair the Ambient Air Temperature Sensor Circuit High Voltage code (P0073) in a 2018 Chevrolet Silverado?
- The repair time can vary based on the specific cause of the code and the individual's experience. In general, it can take anywhere from a few minutes for simple fixes like sensor replacement to a couple of hours for more complex diagnostics and repairs involving wiring or connectors.
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