AutoCodes – Chevrolet – P2BAE Chevrolet

P2BAE Chevrolet Code - NOx Exceedence - NOx control monitoring system

Quick Answer

The selective catalytic reduction system reduces oxides of nitrogen (NOx) emissions by injecting a metered amount of diesel exhaust fluid or reductant into the exhaust gas stream entering the diesel particulate filter (DPF). Common causes include Faulty NOx Sensors, NOx Sensors harness is open or shorted, NOx Sensors circuit poor electrical connection. 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: P2BAE Chevrolet indicates NOx Exceedence - NOx control monitoring system.
Common causes: Common causes include Faulty NOx Sensors, NOx Sensors harness is open or shorted, NOx Sensors circuit poor electrical connection.
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 Popularity 1,841

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Feb 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2BAE Chevrolet Description

The selective catalytic reduction system reduces oxides of nitrogen (NOx) emissions by injecting a metered amount of diesel exhaust fluid or reductant into the exhaust gas stream entering the diesel particulate filter (DPF). Within the selective catalytic reduction catalyst, the reductant reacts with the NOx to form nitrogen, carbon dioxide, and water vapor. Upstream and downstream NOx sensors provide the Engine Control Module (ECM) with engine-out and tailpipe-out NOx levels.
The ECM uses the 2 NOx sensors to control exhaust NOx levels. The NOx sensor measures the amount of NOx and oxygen in the exhaust system. The first NOx sensor is located at the outlet of the turbocharger and monitors the engine out NOx. The second NOx sensor is located in the DPF that monitors NOx levels exiting the DPF. The ECM varies the amount of reductant added by varying the reductant injector duty cycle in response to changes in engine exhaust out NOx levels.

OBDII Code P2BAE Chevrolet - NOx Exceedence - NOx control monitoring system - AutoCodes.com — P2BAE Chevrolet Code - NOx Exceedence - NOx control monitoring system

What does this mean?

What are the Possible Causes of the DTC P2BAE Chevrolet?

Faulty NOx Sensors
NOx Sensors harness is open or shorted
NOx Sensors circuit poor electrical connection
Fualty Diesel Particulate Filter (DPF)

How to Fix the DTC P2BAE Chevrolet?

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 P2BAE Chevrolet 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 P2BAE Chevrolet code?

Need more information on how to fix the P2BAE Chevrolet code? Get Access to Factory Service Manuals

Need Help with the 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 P2BAE Chevrolet Code

1. What does the OBDII code P2BAE for Chevrolet indicate?

The P2BAE code signifies a NOx Exceedence - NOx control monitoring system issue in a Chevrolet vehicle.

2. What are common symptoms of the P2BAE code in a Chevrolet?

Common symptoms include reduced engine performance, increased fuel consumption, and the illumination of the check engine light.

3. What are possible causes of the P2BAE code in a Chevrolet?

Potential causes may include a faulty NOx sensor, issues with the NOx control system, exhaust leaks, or a malfunctioning catalytic converter.

4. How can I diagnose the P2BAE code in my Chevrolet?

Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, inspecting the NOx sensor and related components, and checking for any exhaust system leaks.

5. Can I continue driving my Chevrolet with the P2BAE code present?

It is not recommended to drive the vehicle extensively with the P2BAE code active, as it can lead to increased emissions and potential damage to the engine components.

6. How can I repair the P2BAE code in my Chevrolet?

Repair options may include replacing the faulty NOx sensor, repairing any exhaust leaks, resetting the system, or seeking professional assistance for a thorough diagnosis and repair.

7. Are there any maintenance tips to prevent the P2BAE code in a Chevrolet?

Regularly servicing the vehicle, using high-quality fuel, and addressing any engine issues promptly can help prevent the occurrence of the P2BAE code.

8. Is the P2BAE code specific to certain Chevrolet models?

The P2BAE code can be found in various Chevrolet models equipped with NOx control monitoring systems, such as certain Silverado, Equinox, and Cruze models.

9. Can a DIY enthusiast fix the P2BAE code in a Chevrolet?

Depending on the skill level and access to tools, some DIY enthusiasts may be able to address simpler causes of the P2BAE code, but complex issues may require professional assistance.

10. How important is it to resolve the P2BAE code in a Chevrolet promptly?

It is crucial to address the P2BAE code promptly to ensure optimal engine performance, reduce emissions, and prevent potential long-term damage to the vehicle's components.