The P20C1 fault code in automobiles indicates a problem with the reductant heater system. This issue is often signaled by the engine light turning on.

The cause of the problem could be a faulty reductant heater, an open or shorted reductant heater harness, or a poor electrical connection in the reductant heater circuit. It is important to address this issue promptly as it can lead to increased emissions and reduced fuel efficiency.

The repair process involves visually inspecting the wiring harness and connectors, checking for damaged components, and looking for broken, bent, pushed out, or corroded connector pins.

The repair time for this issue is estimated to be around 1.0 hour.

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 P20C1 fault code. Here are the symptoms to look out for:

  • The P20C1 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, 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 and ensure safe operation on the road.

The P20C1 automobile fault code can be caused by a faulty reductant heater, open or shorted harness, or poor electrical connection.

  • The automobile fault code P20C1 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 p20c1, check the possible causes and inspect related wiring harness and connectors for damage.

  • To fix the automobile fault code P20C1, 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 P20C1 indicates an issue with the reductant heater control circuit.

The estimated repair time for this fault code is 1.0 hour. The cost of fixing this issue can vary depending on the auto repair shop, but it is common for most shops to charge between $75 and $150 per hour. Other factors that may influence the cost include the severity of the issue, the type of vehicle, and the location of the repair shop.

The P20C1 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 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 P20C1 fault code specifically refers to an issue with the control circuit or output of the ‘C’ reductant heater.

What are the possible causes of the P20C1 automobile fault code?

If your engine light is on and you’re seeing the P20C1 fault code, 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, you should visually inspect the wiring harness and connectors, check for damaged components, and look for broken, bent, pushed out, or corroded connector 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.

p20c1 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. To fix it, visually inspect the wiring harness and connectors for damage or corrosion. Check for broken, bent, or pushed out pins.

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