[SOLVED] P11D2 Code: High Voltage O2 Signal – Fixing Nox Sensor 2

The automobile fault code P11D2 indicates a problem with the Nitrogen Oxides (NOx) Sensor 2.

The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light.

The cause of this fault code can be a faulty NOx Sensor 2, an open or shorted harness, or a poor electrical connection in the NOx Sensor 2 circuit.

To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look for broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be around 1.0 hour.

It is important to address this problem promptly to ensure optimal engine performance and emissions control.

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

When the engine light is on or the service engine soon warning light is illuminated, it could indicate the presence of fault code p11d2.

  • The symptoms of the automobile fault code p11d2 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p11d2 can be caused by a faulty NOx Sensor 2, an open or shorted harness, or a poor electrical connection in the circuit.

  • The fault code P11D2 can be caused by the following: 1.
  • Faulty Nitrogen Oxides (NOx) Sensor 2.
  • 2.
  • Nitrogen Oxides Sensor 2 harness is open or shorted.
  • 3.
  • Nitrogen Oxides Sensor 2 circuit poor electrical connection.

To fix the p11d2 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p11d2, follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • 5.
  • Repair time estimation: 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p11d2 are the estimated repair time and the hourly rate charged by auto repair shops.

The estimated repair time for this fault code is 1.0 hour. Auto repair shops typically charge between $75 and $150 per hour for their services.

These factors will determine the overall cost of diagnosing and fixing the p11d2 fault code.

The P11D2 fault code refers to the O2 signal circuit having a high voltage in NOx Sensor 2.

NOx sensors are part of the selective catalytic reduction system used to reduce NOx emissions in diesel engines. There are two NOx sensors, one upstream and one downstream of the selective catalytic reduction system.

These sensors are connected to the control module via CAN and exchange information through it. The NOx sensors have a sensing cell, a pumping cell, and a heater.

The sensors maintain a constant reference voltage across the sensing cell and control the pump current through the pumping cell.

The ECM adjusts the amount of diesel exhaust fluid based on the NOx levels detected by the sensors.

The P11D2 code is set when the ECM detects a fault in the NOx sensor circuitry or a performance fault in NOx Sensor 2 for more than 2 seconds. This fault code indicates a high voltage in the O2 signal circuit of NOx Sensor 2.

What are the possible causes for the automobile fault code p11d2?

If you see the engine light or service engine soon warning light on, the fault code P11D2 could be the culprit. This code is often caused by a faulty Nitrogen Oxides (NOx) Sensor 2, an open or shorted harness, or a poor electrical connection in the NOx Sensor 2 circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded pins in the connectors. Don’t forget to check the “Possible Causes” listed above for further troubleshooting.

How can I visually inspect the wiring harness and connectors to fix the p11d2 fault code?

If you’re dealing with the p11d2 fault code and your engine light is on, it’s time to take action. The cause could be a faulty Nitrogen Oxides (NOx) Sensor 2 or issues with the wiring harness and connectors. To fix it, start by visually inspecting the wiring harness and connectors. Look for any signs of damage, such as broken or bent pins, corrosion, or components that are out of place. This simple step could be the key to resolving the issue and getting your engine running smoothly again. Don’t delay, check it out now!

What should I look for when checking for damaged components and connector’s pins to resolve the p11d2 fault code?

When dealing with the p11d2 fault code, it’s important to address the issue promptly. Start by checking for the common symptoms, such as the Engine Light being ON or the Service Engine Soon Warning Light. The cause of this fault code could be a faulty Nitrogen Oxides (NOx) Sensor 2, an open or shorted harness, or a poor electrical connection in the Nitrogen Oxides Sensor 2 circuit. To resolve the issue, visually inspect the wiring harness and connectors. Pay close attention to damaged components and look for any broken, bent, pushed out, or corroded pins in the connectors.

p11d2 error fault code explained

If you’re seeing the Engine Light ON or the Service Engine Soon Warning Light, it could be due to a faulty Nitrogen Oxides (NOx) Sensor 2, an open or shorted harness, or a poor electrical connection in the Nitrogen Oxides Sensor 2 circuit. To fix this, visually inspect the wiring harness and connectors, check for damaged components, and look for any broken, bent, pushed out, or corroded connector pins.

Scroll to Top