Engine-Codes - Generic - P208C

P208C Code - Reductant Pump Control Circuit Low

- Code Popularity: 26,478 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
ChatAC AutoCodes.com AI Chat

What are the Possible Causes of the DTC P208C?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Reductant Pump
  • Reductant Pump harness is open or shorted
  • Reductant Pump circuit poor electrical connection
⚠ Does your Car have Safety Recalls? → Check here

How to Fix the DTC P208C?

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 connector pins.

Search for P208C Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P208C code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the P208C Code Mean?

The reductant pump assembly contains a diaphragm pressure pump, a pressure sensor, a purge valve, an outlet filter and an internal heating element. The reductant pressure sensor provides feedback to Powertrain Control Module (PCM), which regulates system pressure by controlling pump speed using pulse width modulation. When PCM requests reductant injection, the reductant injector opens and the pump operates, filling reductant pressure line and injector and purging air from the system. When all air is purged, injector closes and pump builds pressure to 73 psi. (500 kPa). The system is then primed and injector provides DEF to the SCR catalyst as determined by PCM.
When the vehicle is shut down, PCM closes injector and actuates reductant purge valve, causing the pump to reverse flow and bleed down pressure on reductant pressure line. The PCM then opens injector to allow gas to enter reductant pressure line, which in turn allows the pump to purge all remaining DEF from the system and return it to reductant tank. The PCM closes injector and returns purge valve to forward position. The PCM commands glow plug control module to provide voltage to reductant pump assembly internal heating element when reductant temperature approaches 12°F (-11°C).
P208C Code - Reductant Pump Control Circuit Low

Need more Information on the Code?

Need more information on how to fix the P208C code? Get Access to Factory Service Manuals

Code P208C Information for Specific Makes

  • P208C Buick Reductant Pump Control Circuit Low Voltage
  • P208C Cadillac Reductant Pump Control Circuit Low Voltage
  • P208C Chevrolet Reductant Pump Control Circuit Low Voltage
  • P208C Dodge Diesel Exhaust Fluid Reductant Pump Control Circuit Low
  • P208C Ford Reductant Pump Control Circuit Low
  • P208C GMC Reductant Pump Control Circuit Low Voltage
  • P208C RAM Diesel Exhaust Fluid Reductant Pump Control Circuit Low

Need Help with the Code?

Get the P208C code diagnosed by a professional: Find a repair shop in your area