The P20C6 fault code in automobiles indicates a problem with the reductant heater system. 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 heater, an open or shorted reductant heater harness, or a poor electrical connection in the reductant heater circuit.

The importance of repairing this issue lies in the fact that it can lead to increased emissions and reduced fuel efficiency. The repair difficulty is moderate, with a repair time of 1.0. To fix the problem, one should visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector pins.

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 the P20C6 fault code.

Here are the symptoms to look out for:

  • The P20C6 fault code in an automobile can cause several symptoms.
  • The most common symptom is the illumination of the engine light or service engine soon warning light.
  • Other symptoms include reduced engine power, decreased fuel efficiency, rough idling, and difficulty starting the engine.
  • Additionally, the vehicle may experience stalling or hesitation during acceleration, 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 P20C6 automobile fault code can be caused by a faulty reductant heater, open or shorted harness, or poor electrical connection.

  • The automobile fault code P20C6 can be caused by a faulty reductant heater.
  • It can also be caused by an open or shorted reductant heater harness.
  • Additionally, a poor electrical connection in the reductant heater circuit can also trigger this fault code.

Below are the possible fixes for the automobile fault code p20c6, including inspecting wiring harness and connectors for damage or corrosion.

  • To fix the automobile fault code P20C6, 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 fault code P20C6 indicates an issue with the Reductant Control Module. The estimated repair time for this fault code is 1.0 hour. The cost of fixing this issue varies between $75 and $150 per hour, depending on the auto repair shop.

Other factors that may influence the cost include the severity of the issue, the type of vehicle, and the location of the repair shop.

It is important to address this issue promptly to avoid further damage to the vehicle and to ensure optimal performance.

The P20C6 fault code is related to the Reductant Heater ‘D’ Control Circuit Performance. The reductant heater and sender assembly contains a heating element, a reductant temperature sensor, and an electrode type level sensor. When the reductant temperature sensor detects the diesel exhaust fluid temperature dropping to the freezing point of 12°F (-11°C), the Powertrain Control Module (PCM) will command the glow plug control module to provide voltage to the heating element.

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

What are the possible causes of the P20C6 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the P20C6 fault code. This code is usually caused by a faulty reductant heater, an open or shorted reductant heater harness, or a poor electrical connection in the reductant heater 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’s pins.

How can I visually inspect the wiring harness and connectors related to the reductant heater?

If you’re experiencing an Engine Light ON or Service Engine Soon Warning Light, it could be due to a faulty Reductant Heater, an open or shorted Reductant Heater harness, or a poor electrical connection in the Reductant Heater circuit. To fix this issue, start by visually inspecting the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. This will help you identify the root cause of the problem and take the necessary steps to fix it.

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

If you find damaged components or broken, bent, pushed out, or corroded connector’s pins during the inspection, it could be the cause of the engine light being on. To fix this issue, check the possible causes listed above and visually inspect the related wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector’s pins.

p20c6 error fault code explained

If your engine light is on and the fault code is P20C6, it may be due to a faulty reductant heater or poor electrical connection. To fix it, visually inspect the wiring harness and connectors for damage or corrosion. Check for broken or bent pins.

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