The P204E fault code in automobiles indicates a problem with the Reductant Pressure Sensor. The most common symptom is the illumination of the Engine Light or Service Engine Soon Warning Light. The cause of this issue could be a faulty Reductant Pressure Sensor, an open or shorted harness, or a poor electrical connection.

It is important to address this issue promptly as it can lead to reduced fuel efficiency and increased emissions. The repair process involves visually inspecting the wiring harness and connectors for any damage or corrosion. The difficulty level of this repair is considered to be moderate, and it typically takes around 1.0 hour to fix.

To interpret the fault code, it is recommended to check the “Possible Causes” listed above and inspect the related components thoroughly.

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

If you notice the Engine Light ON or Service Engine Soon Warning Light, it could be a sign of p204e fault code.

Here are the symptoms to look out for:

  • The P204E fault code in automobiles can cause several symptoms, including the engine light turning on or the service engine soon warning light appearing.
  • Other symptoms may include reduced engine power, poor acceleration, rough idling, stalling, and decreased fuel efficiency.
  • Additionally, the vehicle may experience difficulty starting, and there may be a noticeable decrease in overall performance.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle.

The automobile fault code p204e can be caused by a faulty sensor, open or shorted harness, or poor electrical connection.

  • The automobile fault code P204E can be caused by a faulty Reductant Pressure Sensor.
  • It can also be caused by an open or shorted Reductant Pressure Sensor harness.
  • Additionally, a poor electrical connection in the Reductant Pressure Sensor circuit can also trigger this fault code.

Below are the possible fixes for the automobile fault code p204e, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code p204e, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors for any damage.
  • Look for broken, bent, pushed out, or corroded connector’s pins.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code P204E can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the repair time, which is commonly charged between $75 and $150 per hour by most auto repair shops. Therefore, the total cost of fixing the P204E fault code will depend on the hourly rate charged by the repair shop and the estimated repair time required to fix the issue.

The P204E code is related to the Reductant Pressure Sensor in the Reductant Pump and Sensor Assembly. The Reductant Control Module supplies 5 V to the reductant pressure sensor on the 5 V reference circuit and provides a ground on the low reference circuit.

The reductant pressure sensor provides a signal to the Reductant Control Module on the sensor signal circuit relative to the pressure changes in the reductant system. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the reductant pressure sensor signal is open or shorted to ground.

What are the possible causes of the P204E automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the P204E fault code. This code is usually caused by a faulty reductant pressure sensor, an open or shorted reductant pressure sensor harness, or a poor electrical connection in the reductant pressure sensor circuit. To fix this issue, you should visually inspect the related wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

How can I visually inspect the wiring harness and connectors related to the Reductant Pressure Sensor?

If you’re experiencing an illuminated Engine Light or Service Engine Soon Warning Light, it could be due to a faulty Reductant Pressure Sensor or an open/shorted harness. To fix this issue, start by visually inspecting the wiring harness and connectors related to the sensor. Check for any damaged components and look for broken, bent, pushed out, or corroded connector pins. This will help you identify any poor electrical connections and ensure that the sensor is functioning properly.

What are the steps to take if I find damaged components or broken, bent, pushed out, or corroded connector’s pins during the inspection of the P204E fault code?

If you find damaged components or broken, bent, pushed out, or corroded connector’s pins during the inspection of the P204E fault code, you should visually inspect the related wiring harness and connectors. Check for any possible causes listed above and fix them accordingly. This will help to ensure that the engine light or service engine soon warning light is turned off and the vehicle is running smoothly.

p204e error fault code explained

If your engine light is on, it could be due to a faulty Reductant Pressure Sensor, an open or shorted harness, or poor electrical connection.

Visually inspect the wiring harness and connectors for damage or corrosion. Check for broken, bent, or pushed out pins.

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