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P2033 2014 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 2 Circuit High Voltage

Quick Answer

The P2033 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado refers to an issue with the Exhaust Gas Temperature (EGT) Sensor 2 Circuit registering high voltage. Common causes include Faulty EGT Sensor: The most common cause of the P2033 code is a malfunctioning EGT sensor that is unable to accurately measure the exhaust gas temperature, Wiring or Connector Issues: Damaged or corroded wiring, connectors, or terminals in the EGT sensor circuit can disrupt the signal and lead to high voltage readings, ECM Malfunction: Problems with the Engine Control Module (ECM) can prevent proper communication with the EGT sensor, resulting in erroneous voltage readings. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P2033 2014 Chevrolet Silverado indicates Exhaust Gas Temperature Sensor 2 Circuit High Voltage.
Common causes
Common causes include Faulty EGT Sensor: The most common cause of the P2033 code is a malfunctioning EGT sensor that is unable to accurately measure the exhaust gas temperature, Wiring or Connector Issues: Damaged or corroded wiring, connectors, or terminals in the EGT sensor circuit can disrupt the signal and lead to high voltage readings, ECM Malfunction: Problems with the Engine Control Module (ECM) can prevent proper communication with the EGT sensor, resulting in erroneous voltage readings.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code P2033 2014 Chevrolet Silverado Description

The P2033 diagnostic trouble code (DTC) for a 2014 Chevrolet Silverado refers to an issue with the Exhaust Gas Temperature (EGT) Sensor 2 Circuit registering high voltage. This sensor is responsible for monitoring the temperature of the exhaust gas as it exits the engine. The EGT sensor plays a crucial role in ensuring the engine operates within safe temperature limits and helps optimize fuel efficiency and emissions control.

OBDII Code P2033 2014 Chevrolet Silverado - Exhaust Gas Temperature Sensor 2 Circuit High Voltage
P2033 2014 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 2 Circuit High Voltage

Common Causes of P2033 2014 Chevrolet Silverado

  1. Faulty EGT Sensor: The most common cause of the P2033 code is a malfunctioning EGT sensor that is unable to accurately measure the exhaust gas temperature.
  2. Wiring or Connector Issues: Damaged or corroded wiring, connectors, or terminals in the EGT sensor circuit can disrupt the signal and lead to high voltage readings.
  3. ECM Malfunction: Problems with the Engine Control Module (ECM) can prevent proper communication with the EGT sensor, resulting in erroneous voltage readings.
  4. Exhaust System Leaks: Leaks in the exhaust system can affect the temperature of the exhaust gas, leading to incorrect readings from the EGT sensor.

Symptoms of P2033 2014 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with the P2033 code is the illumination of the Check Engine Light on the vehicle's dashboard.
  2. Reduced Engine Performance: The engine may experience reduced power, hesitation, or rough idling due to incorrect fuel delivery caused by the malfunctioning EGT sensor.
  3. Increased Fuel Consumption: A faulty EGT sensor can lead to inefficient fuel combustion, resulting in higher fuel consumption than usual.
  4. Emission Control Issues: The vehicle may fail emissions tests due to increased emissions caused by the inaccurate exhaust gas temperature readings.

How to Fix P2033 2014 Chevrolet Silverado

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble codes and perform a thorough inspection of the EGT sensor, wiring, and connectors to identify the root cause of the high voltage reading.
  2. Replace the EGT Sensor: If the sensor is found to be faulty, replace it with a new, OEM-quality sensor to ensure accurate temperature readings.
  3. Repair Wiring or Connectors: Repair or replace any damaged wiring, connectors, or terminals in the EGT sensor circuit to restore proper signal transmission.
  4. Clear Codes and Test Drive: After completing the repairs, clear the trouble codes from the ECM memory and test drive the vehicle to ensure that the issue has been resolved.

Cost to Fix P2033 2014 Chevrolet Silverado

The typical repair costs for addressing a P2033 code on a 2014 Chevrolet Silverado can vary depending on the specific cause of the issue. On average, the cost of replacing the EGT sensor and repairing any wiring or connector issues can range from $200 to $500, including parts and labor. However, it's important to note that labor rates at auto repair shops can vary between $80 and $150 per hour, so the total cost may be higher in certain locations or at dealerships. It is recommended to obtain a detailed estimate from a trusted mechanic or repair shop to determine the exact cost for resolving the P2033 code on your vehicle.

What does this mean?

Tech Notes for P2033 2014 Chevrolet Silverado

After starting the engine, the exhaust gas temperature sensor temperature should rise steadily, then stabilize after the engine reaches operating temperature. Exhaust gas temperature sensors may fail intermittently while operating under extreme temperatures. Review the Freeze Frame/Failure Records to verify the failure criteria.

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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.

Frequently Asked Questions about P2033 2014 Chevrolet Silverado Code

1. What does the OBDII code P2033 mean on a 2014 Chevrolet Silverado?

P2033 indicates a high voltage issue in the Exhaust Gas Temperature (EGT) Sensor 2 circuit, which monitors exhaust temperatures to protect components and ensure proper emissions control.

2. What are the symptoms of code P2033 on a 2014 Chevrolet Silverado?

Common symptoms include an illuminated check engine light, reduced fuel efficiency, potential limp mode, and in some cases, excessive exhaust emissions.

3. What causes the P2033 code on a 2014 Chevrolet Silverado?

Possible causes include a faulty EGT sensor, damaged wiring or connectors, an open or short in the sensor circuit, or an issue with the engine control module (ECM).

4. Can I drive my 2014 Chevrolet Silverado with a P2033 code?

Driving with a P2033 code is not recommended, as it may lead to increased emissions, reduced performance, or damage to exhaust components such as the catalytic converter.

5. How do I diagnose the P2033 code on a 2014 Chevrolet Silverado?

Diagnosis involves checking the EGT sensor for damage, inspecting the wiring and connectors for corrosion or breaks, and using a multimeter to test the sensor's voltage and resistance.

6. How do I fix the P2033 code on my 2014 Chevrolet Silverado?

Repairs may include replacing the faulty EGT sensor, repairing or replacing damaged wiring or connectors, and, in rare cases, reprogramming or replacing the ECM.

7. How much does it cost to fix code P2033 on a 2014 Chevrolet Silverado?

The repair cost varies, but replacing the EGT sensor typically costs $100–$300, including parts and labor. Wiring repairs may add to the cost.

8. Where is the Exhaust Gas Temperature Sensor 2 located on a 2014 Chevrolet Silverado?

Sensor 2 is typically located downstream in the exhaust system, after the diesel particulate filter (DPF) or catalytic converter, depending on the engine configuration.

9. Can a bad EGT sensor damage my 2014 Chevrolet Silverado?

Yes, a malfunctioning EGT sensor can cause improper exhaust temperature readings, which may lead to overheating of exhaust components and potential damage to the catalytic converter or DPF.

10. Does clearing the P2033 code fix the problem on a 2014 Chevrolet Silverado?

Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to reappear until the root cause is resolved.

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