If you see the Engine Light ON or Service Engine Soon Warning Light, it could be due to the P204B fault code. This code indicates a problem with the Reductant Pump and Sensor Assembly, which is responsible for reducing emissions. The cause could be a faulty assembly, an open or shorted harness, poor electrical connection, or a faulty Reductant Control Module.

It’s important to address this issue promptly as it can lead to increased emissions and potential damage to the engine.

The repair time for this fault code is estimated at 1.0, and it’s recommended to visually inspect the wiring harness and connectors for any damage or corrosion.

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 p204b fault code. Here are the symptoms to look out for:

  • The P204B fault code in an automobile 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 and ensure safe driving conditions.

The automobile fault code P204B can be caused by a range of issues, including a faulty reductant pump and sensor assembly, open or shorted harness, poor electrical connection, and a faulty reductant control module.

  • The automobile fault code P204B can be caused by a faulty Reductant Pump and Sensor Assembly.
  • It can also be caused by an open or shorted Reductant Pump and Sensor Assembly harness.
  • Poor electrical connection in the Reductant Pump and Sensor Assembly circuit can also trigger this fault code.
  • Lastly, a faulty Reductant Control Module can also be a cause of the P204B fault code.

To fix the p204b automobile fault code, check the possible causes and inspect related components for damage or corrosion.

  • To fix the automobile fault code p204b, 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 P204B 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 diagnosis and fixing the P204B fault code will depend on the hourly rate charged by the repair shop and the estimated repair time required to fix the issue.

The P204B fault 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 P204b fault code and how can they be checked?

If you’re experiencing the P204b fault code, your engine light may be on. This could be due to a faulty Reductant Pump and Sensor Assembly, an open or shorted harness, poor electrical connection, or a faulty Reductant Control Module. To fix the issue, visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector’s pins.

How does a faulty Reductant Control Module contribute to the P204b fault code and what steps can be taken to fix it?

If you’re experiencing the P204b fault code, which is indicated by the engine light or service engine soon warning light turning on, it could be due to a faulty Reductant Control Module. Other possible causes include a faulty Reductant Pump and Sensor Assembly, an open or shorted harness, or a poor electrical connection. To fix the issue, visually inspect the wiring harness and connectors for any damage or corrosion, and check for broken or bent pins.

What are the symptoms of a faulty Reductant Pump and Sensor Assembly and how can it be diagnosed?

If the engine light is on, it could be due to a faulty Reductant Pump and Sensor Assembly. This can be caused by an open or shorted harness, poor electrical connection, or a faulty Reductant Control Module. To diagnose the issue, check the possible causes listed above, visually inspect the wiring harness and connectors, and look for damaged components or corroded pins.

p204b error fault code explained

If your engine light is on and you have a P204B code, it may be due to a faulty Reductant Pump and Sensor Assembly or a poor electrical connection.

Check the wiring harness and connectors for damage or corrosion.

Inspect the components and connector pins for any signs of damage.

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