The automobile fault code P125C 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.

It is important to address this fault code 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)

If you see the Engine Light ON or the Service Engine Soon Warning Light, it could be due to the p125c fault code.

  • The symptoms of the automobile fault code p125c include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p125c can be caused by a faulty NOx sensor, an open or shorted sensor harness, or a poor electrical connection in the sensor circuit.

  • The fault code P125C 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 p125c fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p125c, 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 factors influencing the cost of diagnosing and fixing the automobile fault code p125c are the estimated repair time of 1.0 hour and the typical auto repair shop charges of $75 to $150 per hour.

The P125C fault code is related to the Nitrogen Oxide (NOx) Sensor in your vehicle. The Engine Control Module (ECM) is responsible for monitoring this sensor. When the NOx Sensor does not meet the factory specifications, the ECM will set the P125C code in the On-Board Diagnostic II (OBDII) system.

The P125C code specifically indicates an issue with the heating supply voltage of the Nitrogen Oxide Sensor. This means that there may be a problem with the electrical supply that is responsible for heating the sensor.

It is important to address this issue promptly to ensure proper functioning of the NOx sensor and to maintain the overall performance of your vehicle.

What are the possible causes for the automobile fault code p125c and how can I visually inspect them?

If you’re seeing the engine light on or the service engine soon warning light, the fault code P125C could 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 visually inspect these possible causes, check the wiring harness and connectors related to the NOx sensor. Look for any damaged components and examine the connector’s pins for any signs of being broken, bent, pushed out, or corroded.

How can a faulty Nitrogen Oxide (NOx) Sensor or a poor electrical connection in the sensor circuit lead to the engine light being ON?

When the engine light is ON or the Service Engine Soon Warning Light is illuminated, it could be due to a faulty Nitrogen Oxide (NOx) Sensor or a poor electrical connection in the sensor circuit. To fix this issue, you should check the possible causes mentioned above. Take a visual inspection of the wiring harness and connectors related to the Nitrogen Oxide (NOx) Sensor. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors.

What steps should I take to fix the p125c fault code and ensure that the wiring harness and connectors are in good condition?

To fix the p125c fault code and ensure the wiring harness and connectors are in good condition, start by visually inspecting the related wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. This will help identify any issues with the Nitrogen Oxide (NOx) Sensor harness. Additionally, check the “Possible Causes” listed above to further diagnose and address the problem.

p125c error fault code explained

If your engine light is on and you’re dealing with a P125C fault code, it’s likely due to a faulty Nitrogen Oxide (NOx) Sensor or an issue with the sensor’s harness or circuit connection.

To fix this, visually inspect the wiring harness and connectors for any damage, and check for broken, bent, pushed out, or corroded pins on the connectors.

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