P20C3 GMC - Reductant Heater 'C' Control Circuit Low

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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P20C3 GMC Possible Causes

  • Faulty Reductant Heater
  • Reductant Heater harness is open or shorted
  • Reductant Heater circuit poor electrical connection

First diagnose P20C3 GMC code

    Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.

Cost of diagnosing the P20C3 GMC code

    Labor: 1.0

    The cost of diagnosing the P20C3 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

P20C3 GMC Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P20c3 Gmc Description

The reductant heater and sender assembly contains pickup tube for reductant pump module, an electric heating element, a reductant temperature sensor and an electrode type level sensor. The heating element is directly above pickup tubes inlet filter. When 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 heating element. The heating element thaws liquid reductant within reductant heater and sender assembly reservoir during cold ambient temperatures.

OBDII Code P20c3 Gmc - Reductant Heater 'C' Control Circuit Low - AutoCodes.com

P20C3 GMC More Information

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