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P2BAE Code - NOx Exceedence - NOx control monitoring system

- Code Popularity: 48,083 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P2BAE?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty NOx Sensors
  • NOx Sensors harness is open or shorted
  • NOx Sensors circuit poor electrical connection
  • Fualty Diesel Particulate Filter (DPF)
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How to Fix the DTC P2BAE?

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

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2BAE code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P2BAE 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 - NOx Exceedence - NOx control monitoring system - AutoCodes.com
P2BAE Code - NOx Exceedence - NOx control monitoring system

Need More Information on the Code?

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

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

Need Help with the Code?

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Code P2BAE comments

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