The P204D automobile fault code indicates a problem with the Reductant Pump and Sensor Assembly, which can cause the engine light to turn on. The possible causes of this fault code include a faulty Reductant Pump and Sensor Assembly, an open or shorted harness, poor electrical connection, or a faulty Reductant Control Module.

It is important to visually inspect the wiring harness and connectors for any damage or corrosion. The repair time for this fault code is estimated at 1.0, and it is crucial to address the issue promptly to avoid further damage to the vehicle.

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

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 p204d fault code.

Here are the symptoms to look out for:

  • The P204D fault code in an automobile can cause the following symptoms: Engine Light ON, Service Engine Soon Warning Light, engine misfires, rough idling, reduced engine power, poor acceleration, decreased fuel efficiency, and difficulty starting the engine.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

The automobile fault code p204d can be caused by a faulty reductant pump and sensor assembly, open or shorted harness, poor electrical connection, or a faulty reductant control module.

  • The automobile fault code P204D 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 P204D fault code.

To fix the p204d automobile fault code, check the possible causes and inspect related components for damage or corrosion.

  • To fix the automobile fault code p204d, you need to check the possible causes listed above.
  • Visually inspect the related wiring harness and connectors.
  • Look for damaged components and check 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 P204D 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. Therefore, the total cost of diagnosis and fixing the P204D fault code will depend on the hourly rate charged by the auto repair shop and the estimated repair time required to fix the issue.

The P204D 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 ECM is connected to the Reductant Control Module via the CAN bus.

The DTC will be set when the ECM detects that the reductant pressure sensor signal is open or shorted to ground. The P204D Code indicates a Reductant Pressure Sensor Circuit High.

What are the possible causes of the automobile fault code P204D that triggers the engine light or service engine soon warning light?

If you see the engine light or service engine soon warning light on your dashboard, it could be due to the P204D fault code. This code is triggered by a faulty Reductant Pump and Sensor Assembly, an open or shorted harness, poor electrical connection, or a faulty Reductant Control Module. 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’s pins.

How can one identify if the Reductant Pump and Sensor Assembly harness is open or shorted when the P204D fault code appears?

When the P204D fault code appears, the engine light or service engine soon warning light turns on, indicating a problem with the Reductant Pump and Sensor Assembly. To identify if the Reductant Pump and Sensor Assembly harness is open or shorted, check for poor electrical connections, a faulty Reductant Control Module, or damaged components. Visually inspect the related wiring harness and connectors, and look for broken, bent, pushed out, or corroded connector’s pins.

What steps should be taken to fix the P204D fault code, and how can one ensure that the Reductant Pump and Sensor Assembly circuit has a good electrical connection?

If you’re experiencing the P204D fault code, start by checking the Reductant Pump and Sensor Assembly circuit for a good electrical connection. Visually inspect the wiring harness and connectors for any damage or corrosion. Look for broken, bent, pushed out, or corroded connector pins. This will help ensure that the fault isn’t caused by a poor electrical connection.

p204d error fault code explained

If you see the Engine Light ON or Service Engine Soon Warning Light, it could be due to a faulty Reductant Pump and Sensor Assembly, open or shorted harness, poor electrical connection, or a faulty Reductant Control Module.

Check the possible causes, inspect the wiring harness and connectors, and look for damaged components or corroded pins.

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