The automobile fault code P126A indicates a problem with the Nitrogen Oxide (NOx) Sensor.

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, an open or shorted NOx sensor harness, or a poor electrical connection in the NOx sensor circuit. To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look for any broken, bent, pushed out, or corroded pins in the connectors.

The repair time for this issue is estimated to be around 1.0 hour. To interpret the fault code, refer to the “Possible Causes” listed above.

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 p126a fault code.

  • The symptoms of the automobile fault code p126a include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p126a can be caused by a faulty Nitrogen Oxide (NOx) Sensor, an open or shorted NOx Sensor harness, or a poor electrical connection in the NOx Sensor circuit.

  • The fault code p126a can be caused by a faulty Nitrogen Oxide (NOx) Sensor, an open or shorted Nitrogen Oxide (NOx) Sensor harness, or a poor electrical connection in the Nitrogen Oxide (NOx) Sensor circuit.

To fix the p126a fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p126a, 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.
  • The estimated repair time for this fix is 1.0 hour.

The automobile fault code p126a has an estimated repair time of 1.0 hour.

Auto repair shops typically charge between $75 and $150 per hour for this type of repair.

The P126A fault code refers to a problem with the Nitrogen Oxide (NOx) Sensor in your vehicle.

The Engine Control Module (ECM) is responsible for monitoring this sensor.

When the NOx Sensor is not functioning within the factory specifications, the ECM will set the P126A code in the On-Board Diagnostic II (OBDII) system. This fault code specifically indicates a plausibility correlation issue between the Nitrogen Oxide (NOx) Sensor and the Oxygen Sensor located before the catalytic converter. The ECM detects that there is a problem with the relationship between these two sensors, which can affect the accuracy of the emissions control system. If you encounter the P126A fault code, it is important to have your vehicle inspected and repaired by a qualified technician. They will be able to diagnose the exact cause of the issue and perform the necessary repairs to ensure that your vehicle meets the required emissions standards.

Ignoring this fault code could lead to increased emissions and potential damage to the catalytic converter.

What are the possible causes of the automobile fault code p126a?

If you’re seeing the engine light on or the service engine soon warning light, the fault code P126A might be the culprit. This code is often caused by a faulty Nitrogen Oxide (NOx) sensor, an open or shorted NOx sensor harness, or a poor electrical connection in the NOx sensor circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look out for any damaged components and check for broken, bent, pushed out, or corroded connector pins. Don’t forget to consider the possible causes mentioned above.

How can I visually inspect the wiring harness and connectors to fix the p126a fault code?

If you’re dealing with the p126a fault code and notice that your engine light is on, it’s time to take action. The most common cause of this issue is a faulty Nitrogen Oxide (NOx) Sensor or a problem with the sensor’s wiring. 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 can help you identify and resolve the issue quickly.

What should I look for when checking for damaged components and connector’s pins to resolve the p126a fault code?

When resolving the p126a fault code, start by checking for damaged components and connector’s pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any signs of damage such as broken, bent, pushed out, or corroded pins. By doing this, you can identify any issues with the Nitrogen Oxide (NOx) Sensor harness and circuit connections, which may be causing the fault code.

p126a error fault code explained

If your engine light is on and you’re seeing the P126A fault code, it could be due to a faulty Nitrogen Oxide (NOx) sensor or issues with the sensor’s harness and circuit connection.

To fix this, visually inspect the wiring harness and connectors for any damage or corrosion. Look out for broken or bent pins as well.

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