The P2046 fault code in automobiles indicates a problem with the Reductant Temperature 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 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 see the Engine Light ON or Service Engine Soon Warning Light, it could be due to the p2046 fault code.

Here are the symptoms to look out for:

  • The P2046 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 a decrease in engine power, reduced fuel efficiency, and difficulty starting the engine.
  • Additionally, the vehicle may experience rough idling or stalling, and there may be a noticeable decrease in acceleration.
  • It is important to address these symptoms promptly to prevent further damage to the vehicle and ensure safe driving conditions.

P2046 fault code can be caused by a faulty sensor, open or shorted harness, or poor electrical connection.

  • The automobile fault code P2046 can be caused by a faulty Reductant Temperature Sensor.
  • It can also be caused by an open or shorted Reductant Temperature Sensor harness.
  • Additionally, a poor electrical connection in the Reductant Temperature Sensor circuit can also trigger this fault code.

To fix the automobile fault code p2046, check the possible causes and inspect related components for any damage or corrosion.

  • To fix the automobile fault code p2046, 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 fault code P2046 indicates an issue with the reductant injector circuit in the exhaust system.

The estimated repair time for this fault code is 1.0 hour. The cost of fixing this issue will depend on the hourly rate charged by the auto repair shop.

The average hourly rate is between $75 and $150. Therefore, the cost of fixing the P2046 fault code can range from $75 to $150.

The P2046 fault code is related to the reductant heater and sender assembly in a vehicle. This assembly contains a pickup tube for the reductant pump module, an electric heating element, a reductant temperature sensor, and an electrode type level sensor. When the reductant temperature sensor detects that the diesel exhaust fluid temperature has dropped to the freezing point of 12°F (-11°C), the PCM will command the glow plug control module to provide voltage to the heating element.

This heating element thaws the liquid reductant within the reductant heater and sender assembly reservoir during cold ambient temperatures.

The P2046 fault code specifically refers to an intermittent issue with the reductant temperature sensor circuit.

This means that there may be a problem with the sensor or its wiring that is causing intermittent issues with the heating element and reductant pump module.

What are the possible causes of the P2046 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the P2046 fault code. This code is caused by a faulty reductant temperature sensor, an open or shorted reductant temperature sensor harness, or a poor electrical connection in the reductant temperature 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 Temperature Sensor?

If you’re experiencing an illuminated Engine Light or Service Engine Soon Warning Light, it could be due to a faulty Reductant Temperature 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 get your vehicle back on track.

What should I do if I find damaged components or broken, bent, pushed out, or corroded connector’s pins during the inspection for the P2046 fault code?

If you find damaged components or broken, bent, pushed out, or corroded connector’s pins during the inspection for the P2046 fault code, you should replace or repair them as necessary. This will help ensure that the Reductant Temperature Sensor is receiving accurate readings and that the engine light or service engine soon warning light is turned off. Be sure to visually inspect the related wiring harness and connectors, and check for any other possible causes listed above.

p2046 error fault code explained

If your engine light is on and you have a P2046 fault code, it could be due to a faulty Reductant Temperature 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 connector pins.

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