AutoCodes – GMC – P2034 GMC

P2034 GMC Code - Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 2, Exhaust Gas Temperature Sensor Bank 2 Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 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: P2034 GMC indicates Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 2, Exhaust Gas Temperature Sensor Bank 2 Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 2 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 1,259

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jan 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2034 GMC Description

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. The EGTS is located in front of the Diesel Oxidation Catalyst (DOC) and/or in front of the Diesel Particulate Filter (DPF). The EGTS detects exhaust gas temperature and converts it into a voltage and feeds back to the PCM with the voltage signal in order to control engine conditions to effectively reduce emissions. The PCM sets the P2034 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.

OBDII Code P2034 GMC - Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2 - AutoCodes.com — P2034 GMC Code - Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2

What does this mean?

What are the Possible Causes of the DTC P2034 GMC?

Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 2 Sensor 2
Exhaust Gas Temperature Sensor Bank 2 Sensor 2 harness is open or shorted
Exhaust Gas Temperature Sensor Bank 2 Sensor 2 circuit poor electrical connection
Exhaust leaks
Excessive particulate matter buildup on sensor

How to Fix the DTC P2034 GMC?

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.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2034 GMC 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 P2034 GMC code?

Need more information on how to fix the P2034 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2034 GMC code diagnosed by a professional: Find a repair shop in your area

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 P2034 GMC Code

1. What are the common symptoms of OBDII code P2034 GMC?

- Common symptoms include decreased fuel efficiency, engine misfires, rough idling, and the illumination of the Check Engine Light.

2. What does OBDII code P2034 GMC indicate?

- This code indicates a malfunction in the Exhaust Gas Temperature (EGT) Sensor Circuit for Bank 2 Sensor 2 in a GMC vehicle.

3. What are the possible causes of OBDII code P2034 GMC?

- Possible causes include a faulty EGT sensor, wiring issues in the sensor circuit, a damaged sensor connector, or problems with the engine control module.

4. How can I diagnose the issue causing OBDII code P2034 GMC?

- Diagnosing the issue involves using an OBDII scanner to retrieve the code, inspecting the EGT sensor and its wiring for damage, and testing the sensor's resistance and voltage.

5. Can I continue driving with OBDII code P2034 GMC?

- While the vehicle may still be operable, it is recommended to address the issue promptly to prevent potential damage to the engine and emissions system.

6. How can I repair OBDII code P2034 GMC?

- Repair options include replacing the faulty EGT sensor, repairing or replacing damaged wiring, cleaning or repairing the sensor connector, or resetting the engine control module.

7. Is it possible to clear OBDII code P2034 GMC without fixing the underlying issue?

- Clearing the code without addressing the root cause will only temporarily turn off the Check Engine Light, as the code is likely to return once the issue persists.

8. Are there any DIY tips for resolving OBDII code P2034 GMC?

- DIY enthusiasts can attempt to visually inspect the sensor and wiring, clean the sensor connector, and use a multimeter to check for continuity and proper voltage.

9. Does OBDII code P2034 GMC affect vehicle performance?

- Yes, this code can impact vehicle performance by causing issues such as reduced power, decreased fuel economy, and potential engine misfires.

10. How long does it typically take to repair OBDII code P2034 GMC?

- The repair time can vary depending on the exact cause of the issue, but it can take anywhere from 30 minutes to a few hours to diagnose and fix the problem.