P2BAE 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 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.
Code P2BAE Description
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.
What are the Possible Causes of the DTC P2BAE?
- 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?
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 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 code?
Need more information on how to fix the P2BAE code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2BAE code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P2BAE Chevrolet — NOx Exceedence - NOx control monitoring system
- P2BAE Dodge — NOx Exceedence - NOx control monitoring system
- P2BAE GMC — NOx Exceedence - NOx control monitoring system
Frequently Asked Questions about P2BAE Code
1. What does OBDII code P2BAE mean?
The OBDII code P2BAE indicates a NOx Exceedence - NOx control monitoring system issue.
2. What are the common symptoms of OBDII code P2BAE?
Common symptoms of code P2BAE may include reduced engine performance, increased fuel consumption, and possibly the illumination of the Check Engine Light.
3. What are the possible causes of OBDII code P2BAE?
Possible causes of code P2BAE include a malfunctioning NOx sensor, issues with the NOx control system, exhaust leaks, or a faulty catalytic converter.
4. How can I diagnose the OBDII code P2BAE?
Diagnosing code P2BAE typically involves using an OBDII scanner to retrieve the code, conducting a visual inspection for any obvious issues, and performing further testing on the NOx sensor and related components.
5. Can I continue driving with OBDII code P2BAE?
It is not recommended to continue driving with OBDII code P2BAE, as it can lead to increased emissions and potential damage to the engine or emissions control system.
6. How can I repair OBDII code P2BAE?
Repairing code P2BAE may involve replacing the faulty NOx sensor, repairing any exhaust leaks, addressing issues with the NOx control system, or replacing a malfunctioning catalytic converter.
7. Is it possible to reset OBDII code P2BAE without fixing the underlying issue?
While you can clear the code temporarily, it is not recommended to reset OBDII code P2BAE without addressing the root cause, as the issue may persist and potentially cause more significant problems.
8. How long does it take to repair OBDII code P2BAE?
The time required to repair code P2BAE can vary depending on the exact cause of the issue and the complexity of the repair. It is recommended to consult a professional mechanic for an accurate estimate.
9. Can a DIY enthusiast fix OBDII code P2BAE?
Depending on the individual's mechanical skills and access to tools, a DIY enthusiast may be able to address some of the common causes of code P2BAE, such as replacing a NOx sensor or repairing minor exhaust leaks.
10. How often does OBDII code P2BAE occur in vehicles?
The occurrence of OBDII code P2BAE can vary among different vehicle makes and models. It is more commonly seen in vehicles equipped with advanced emissions control systems that monitor NOx levels.
Discuss the causes and fixes for P2BAE OBDII Code
Code P2BAE comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
