[SOLVED] P20Ee Code: How To Fix Scr Nox Catalyst Efficiency Below Threshold

The P20EE automobile fault code is a common issue that triggers the Engine Light ON or Service Engine Soon Warning Light.

It can be caused by various factors, including exhaust leaks, fuel contamination, faulty Diesel Particulate Filter (DPF), NOx sensor, Diesel Exhaust Fluid, or Selective Catalyst Reduction (SCR) Catalyst. The importance of repairing this issue lies in preventing further damage to the vehicle’s engine and exhaust system.

The repair difficulty is moderate, and the fix involves visually inspecting the wiring harness and connectors, checking for damaged components, and looking for broken, bent, pushed out, or corroded connector’s pins. The repair time is estimated to be around 1.0 hour.

It is crucial to interpret the fault code correctly to identify the root cause of the problem and fix it effectively.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

If you notice the Engine Light ON or Service Engine Soon Warning Light, it could be a sign of the p20ee fault code. Here are the symptoms to look out for:

  • The P20EE fault code in automobiles can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include reduced engine power, decreased fuel efficiency, and difficulty starting the engine.
  • Additionally, the vehicle may experience rough idling or stalling, and there may be a noticeable decrease in acceleration.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

There are several causes of the automobile fault code p20ee, including exhaust leaks, fuel contamination, and faulty DPF.

  • The automobile fault code P20EE can be caused by several factors.
  • These include exhaust leaks, fuel contamination, a faulty Diesel Particulate Filter (DPF), a faulty NOx sensor, issues with Diesel Exhaust Fluid, and a faulty Selective Catalyst Reduction (SCR) Catalyst.
  • It is important to identify the specific cause of the fault code in order to properly address and fix the issue.

Below are some possible fixes for the automobile fault code p20ee, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code P20EE, first, check the possible causes listed above.
  • Then, visually inspect the related wiring harness and connectors.
  • Look for damaged components and check for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code P20EE indicates a problem with the SCR NOx Catalyst Efficiency. The estimated repair time for this issue is 1.0 hour. The cost of fixing this issue can vary depending on the auto repair shop, but it is common for them to charge between $75 and $150 per hour.

Other factors that may influence the cost include the severity of the issue, the type of vehicle, and the location of the repair shop.

It is important to address this issue promptly to avoid further damage to the vehicle and to ensure it is running efficiently.

The P20EE code is related to the selective catalytic reduction system in diesel engines. It indicates that the efficiency of the SCR NOx catalyst is below the threshold in bank 1.

The system injects diesel exhaust fluid or reductant into the exhaust gas stream to reduce NOx emissions. The ECM uses two NOx sensors to control exhaust NOx levels and varies the amount of reductant added in response to changes in engine exhaust out NOx levels.

The first NOx sensor is located at the outlet of the turbocharger and monitors the engine out NOx, while the second NOx sensor is in the DPF that monitors NOx levels exiting the DPF.

What are the possible causes of the P20EE fault code?

If you see the Engine Light ON or Service Engine Soon Warning Light, it could be due to the P20EE fault code. This code can be caused by exhaust leaks, fuel contamination, a faulty Diesel Particulate Filter (DPF), a faulty NOx Sensor, Diesel Exhaust Fluid, or a faulty Selective Catalyst Reduction (SCR) Catalyst. To fix this issue, you should check the possible causes listed above and visually inspect the related wiring harness and connectors. Additionally, check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

How can I visually inspect the related wiring harness and connectors to fix the P20EE fault code?

If you’re experiencing an Engine Light ON or Service Engine Soon Warning Light due to a P20EE fault code, there are a few possible causes to consider. These include exhaust leaks, fuel contamination, a faulty Diesel Particulate Filter (DPF), a faulty NOx Sensor, Diesel Exhaust Fluid, or a faulty Selective Catalyst Reduction (SCR) Catalyst. To fix the issue, start by checking the possible causes listed above. Then, visually inspect the related wiring harness and connectors for any damage or issues. Look for broken, bent, pushed out, or corroded connector’s pins to identify the root of the problem.

Is it necessary to check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins to fix the P20EE fault code?

Yes, it is necessary to check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins to fix the P20EE fault code. This is because the fault code can be caused by a variety of issues, including exhaust leaks, fuel contamination, faulty DPF, faulty NOx sensor, diesel exhaust fluid, and faulty SCR catalyst. By visually inspecting the related wiring harness and connectors, you can identify any damaged components or connector pins that may be contributing to the issue and take appropriate action to fix it.

p20ee error fault code explained

If your engine light is on due to the P20EE fault code, check for exhaust leaks, fuel contamination, faulty DPF, NOx sensor, DEF, or SCR catalyst. Visually inspect wiring harness and connectors for damage or corrosion.

Look for broken, bent, pushed out, or corroded connector’s pins.

Scroll to Top