The automobile fault code P123E indicates a problem with the Nitrogen Oxide (NOx) system.
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 harness, or a poor electrical connection in the NOx circuit. To fix this issue, it is recommended to 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.
To interpret the fault code, it is important to check the “Possible Causes” listed above and perform the necessary inspections and repairs.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 10.0 (Out of 10) |
Decode The Symptoms: Unveiling The P123E Fault Code Mystery!
When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p123e fault code.
- The symptoms of the automobile fault code p123e include the Engine Light being ON and the Service Engine Soon Warning Light being illuminated.
Unraveling The Mystery: What Causes Fault Code P123E?
The automobile fault code p123e can be caused by a faulty Nitrogen Oxide (NOx) system, an open or shorted NOx harness, or a poor electrical connection in the NOx circuit.
- The fault code P123E can be caused by the following: – Faulty Nitrogen Oxide (NOx) sensor.
- – Open or shorted Nitrogen Oxide (NOx) harness.
- – Poor electrical connection in the Nitrogen Oxide (NOx) circuit.
Fixing Code P123E: Simple Steps To Resolve The Fault
To fix the automobile fault code p123e, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.
- To fix the automobile fault code P123E, 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.
Cracking The Code: P123E – Cost And Complexity Unveiled!
The automobile fault code P123E can be diagnosed and fixed within an estimated repair time of 1.0 hour.
The cost of the repair will depend on the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour.
P123E Fault Code: Understanding The Description And Troubleshooting Steps
The P123E 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 ECM detects that the NOx Sensor is not functioning within the factory specifications, it triggers the P123E fault code. This code specifically indicates that the NOx Sensor is experiencing sensor poisoning, resulting in a low NOx signal. Sensor poisoning occurs when the NOx Sensor becomes contaminated or damaged, leading to inaccurate readings.
This can happen due to various factors such as exposure to certain chemicals or exhaust gases.
When the NOx signal is too low, it can affect the vehicle’s emissions control system and overall performance. It is important to address this issue promptly to ensure proper functioning of the NOx Sensor and to maintain optimal emissions levels.
FAQ
If you see the engine light or service engine soon warning light on, it could be due to the fault code P123e. This code is often caused by a faulty Nitrogen Oxide (NOx) or an open or shorted NOx harness. It can also be a result of a poor electrical connection in the NOx circuit. To fix this issue, visually inspect the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. Make sure to address any issues found during the inspection.
To fix the P123e fault code, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors. This can help identify if the fault lies in the faulty Nitrogen Oxide (NOx) or if there is an open or shorted circuit. Take note of any poor electrical connections.
When resolving the P123e 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 faults in the Nitrogen Oxide (NOx) circuit and ensure a proper electrical connection. Don’t forget to also check for any open or shorted harnesses.

Wrap Up
If you’re seeing the Engine Light ON or the Service Engine Soon Warning Light, it could be due to a faulty Nitrogen Oxide (NOx) or an open or shorted NOx harness. To fix it, visually inspect the wiring harness and connectors for any damage or corrosion.
Check for broken or bent pins as well.