[SOLVED] P11D8 Code: Fix O2 Pump Current Control Circuit For Nox Sensor 2

The automobile fault code P11D8 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 be a sign of the p11d8 fault code.

  • The symptoms of the automobile fault code p11d8 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p11d8 can be caused by a faulty NOx Sensor 2, an open or shorted harness, or a poor electrical connection in the NOx Sensor 2 circuit.

  • The fault code P11D8 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 p11d8 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p11d8, 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 p11d8 are the estimated repair time of 1.0 hour and the hourly rate charged by auto repair shops, which typically ranges between $75 and $150.

The P11D8 fault code refers to the O2 Pump Current Control Circuit for NOx Sensor 2.

This code is related to the Nitrogen Oxides (NOx) sensors, which are part of the selective catalytic reduction system in diesel engines.

There are two NOx sensors, one upstream and one downstream of the selective catalytic reduction system. These sensors measure the concentration of NOx in the exhaust gas. The NOx sensors are smart sensors that perform electrical monitoring inside the sensor and send the results to the Engine Control Module (ECM). Each sensor contains a sensing cell, a pumping cell, and a heater.

The sensing cell maintains a constant reference voltage, and the pumping cell controls the pump current to maintain this voltage. The amount of current required is proportional to the concentration of NOx in the exhaust. If there is a circuit or performance condition issue with the NOx sensor 2, the NOx sensor module detects it and communicates it to the ECM. If the ECM software detects a fault in the NOx sensor circuitry or a performance fault in the NOx sensor for more than 2 seconds, it sets the P11D8 fault code.

This code indicates a problem with the O2 Pump Current Control Circuit for NOx Sensor 2.

What are the possible causes for the engine light being on and the fault code p11d8?

If you see the engine light on and the fault code P11D8, 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 issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check if any connector pins are broken, bent, pushed out, or corroded. 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 issue related to the fault code p11d8?

If you’re dealing with the fault code p11d8 and your engine light is on, it’s time to take a closer look at the wiring harness and connectors. The issue could be a faulty Nitrogen Oxides (NOx) Sensor 2, an open or shorted harness, or a poor electrical connection in the circuit. To fix it, visually inspect the wiring harness and connectors for any damage. Check for broken, bent, pushed out, or corroded pins on the connectors. Don’t forget to consider the possible causes mentioned earlier.

What should I look for when checking for damaged components and connector pins to resolve the fault code p11d8?

When resolving the fault code p11d8, start by checking for damaged components and connector pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any broken, bent, pushed out, or corroded connector pins. By doing so, you can identify any faults in the Nitrogen Oxides Sensor 2 harness and circuit, which may be causing the Engine Light or Service Engine Soon Warning Light to turn on.

p11d8 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.

To fix this, visually inspect the wiring harness and connectors, checking for any damage or corrosion.

Look out for broken or bent pins on the connectors.

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