The P204A 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 p204a fault code.

Here are the symptoms to look out for:

  • The P204A fault code in an automobile can cause the following symptoms: Engine Light ON, Service Engine Soon Warning Light, rough idling, poor acceleration, decreased fuel efficiency, engine stalling, and difficulty starting the engine.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving.

The automobile fault code p204a can be caused by a faulty reductant pressure sensor, open or shorted harness, or poor electrical connection.

  • The automobile fault code P204A 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.

To fix the p204a automobile fault code, check the possible causes and inspect related components for damage or corrosion.

  • To fix the automobile fault code p204a, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and 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 P204A can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of repair is influenced by the hourly rate charged by the auto repair shop, which typically ranges between $75 and $150 per hour.

These factors should be considered when estimating the total cost of diagnosing and fixing the P204A fault code.

The P204A fault code refers to the Reductant Pressure Sensor Circuit. The Reductant Pressure Sensor is located in the Reductant Pump and Sensor Assembly.

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

What are the possible causes of the P204A automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the P204A fault code. This code is 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 wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector 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 P204A fault code?

If you find damaged components or broken, bent, pushed out, or corroded connector’s pins during the inspection of the P204A 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.

p204a error fault code explained

If your engine light is on and you have a P204A fault code, it may be due to a faulty Reductant Pressure Sensor or a poor electrical connection. To fix it, visually inspect the wiring harness and connectors for damage or corrosion and check for broken or bent pins.

Scroll to Top