AutoCodesGMC – P2033 2016 GMC Sierra

P2033 2016 GMC Sierra Code - Exhaust Gas Temperature Sensor 2 Circuit High Voltage

Quick Answer

The Exhaust Gas Temperature sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) 2, Exhaust Gas Temperature Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor 2 circuit poor electrical connection. 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 2016 GMC Sierra indicates Exhaust Gas Temperature Sensor 2 Circuit High Voltage.
Common causes
Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) 2, Exhaust Gas Temperature Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor 2 circuit poor electrical connection.
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.
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Code Popularity 518
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 03, 2022
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Code P2033 2016 GMC Sierra Description

The Exhaust Gas Temperature sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Exhaust temperature sensor 1 is the first exhaust temperature sensor in the exhaust system, the following exhaust temperature sensors are counted upward from the engine outlet to the exhaust system end. The Engine Control Module (ECM) supplies 5 V to the exhaust gas temperature signal circuit and supplies a ground to the low reference circuit. The exhaust gas temperature sensor temperature information is used by the ECM during the exhaust gas particulate filter cleaning process. The Diagnostic Trouble Code (DTC) will ve set when the ECM detects that the exhaust gas temperature sensor is greater than 900 Ω for greater than 2 s.
OBDII Code P2033 2016 GMC Sierra - Exhaust Gas Temperature Sensor 2 Circuit High Voltage - AutoCodes.com
P2033 2016 GMC Sierra Code - Exhaust Gas Temperature Sensor 2 Circuit High Voltage

What are the Possible Causes of the DTC P2033 2016 GMC Sierra?

  • Faulty Exhaust Gas Temperature Sensor (EGTS) 2
  • Exhaust Gas Temperature Sensor 2 harness is open or shorted
  • Exhaust Gas Temperature Sensor 2 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P2033 2016 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2033 2016 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2033 2016 GMC Sierra code?

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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 2016 GMC Sierra Code

What does the OBDII code P2033 mean on a 2016 GMC Sierra?

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

What are the common symptoms of code P2033 on a 2016 GMC Sierra?

Symptoms may include a check engine light, reduced fuel efficiency, increased emissions, or potentially reduced engine performance.

What causes the P2033 code to appear on a 2016 GMC Sierra?

Common causes include a faulty EGT Sensor 2, damaged wiring or connectors, excessive exhaust temperatures, or issues with the vehicle’s emissions control system.

Can I drive my 2016 GMC Sierra with code P2033 active?

Driving with this code is possible but not recommended, as it could lead to increased emissions, reduced efficiency, and potential damage to the exhaust system.

How do I diagnose the P2033 code on a 2016 GMC Sierra?

Start by inspecting the wiring and connectors for damage or corrosion, then test the EGT Sensor 2 for proper operation using a multimeter or diagnostic tool.

How do I fix code P2033 on a 2016 GMC Sierra?

Repairs typically involve replacing the faulty EGT Sensor 2, repairing damaged wiring, or addressing any underlying exhaust system issues.

How much does it cost to fix code P2033 on a 2016 GMC Sierra?

Repair costs vary but typically range from $100 to $300, depending on whether the sensor or wiring needs replacement.

Can a faulty EGT Sensor 2 cause other problems on a 2016 GMC Sierra?

Yes, a malfunctioning sensor can lead to inaccurate exhaust temperature readings, affecting emissions and potentially causing damage to the catalytic converter.

How can I prevent code P2033 from occurring on my 2016 GMC Sierra?

Regular maintenance, including inspecting exhaust system components and ensuring wiring is intact, can help prevent this issue.

Do I need special tools to repair code P2033 on a 2016 GMC Sierra?

Basic tools like a multimeter and a socket set are usually sufficient, but a diagnostic scanner may be helpful for pinpointing the issue.

Discuss the causes and fixes for P2033 2016 GMC Sierra OBDII Code

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