The P20C2 fault code in automobiles indicates a problem with the reductant heater system. This can cause the engine light to turn on, indicating a need for service. The cause of this issue could be a faulty reductant heater, an open or shorted harness, or poor electrical connections.

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 damage and checking for broken or corroded pins. The repair time for this issue is estimated to be around 1.0 hour.

To interpret the fault code, it is recommended to check the possible causes listed above.

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 P20C2 fault code. Here are some symptoms to look out for:

  • The P20C2 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, 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.

The P20C2 fault code can be caused by a faulty reductant heater, open or shorted harness, or poor electrical connection.

  • The automobile fault code P20C2 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.

To fix the automobile fault code p20c2, check the possible causes and inspect related wiring harness and connectors for damage.

  • To fix the automobile fault code P20C2, first, check the possible causes listed above.
  • Then, 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.
  • This fix will take an estimated repair time of 1.0 hour.

The automobile fault code P20C2 has an estimated repair time of 1.0 hour. The cost of fixing this fault code is influenced by the repair time.

Most auto repair shops charge between $75 and $150 per hour for their services. Therefore, the fixing cost of P20C2 will range between $75 and $150, depending on the repair time required.

The P20C2 fault code relates to the Reductant Heater ‘C’ Control Circuit Performance. The Reductant Heater and Sender Assembly contains a heating element, a temperature sensor, and a level sensor. When the temperature drops to 12°F (-11°C), the Powertrain Control Module (PCM) commands the glow plug control module to provide voltage to the heating element.

The heating element thaws the liquid reductant within the assembly reservoir during cold temperatures.

What are the possible causes of the P20C2 automobile fault code?

If you see the engine light on or the service engine soon warning light, it could be due to the P20C2 fault code. This code is 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.

p20c2 error fault code explained

If your engine light is on, it could be due to a faulty reductant heater, 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 pins.

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