P2056 - Reductant Injection Valve Circuit/Open Bank 2 Unit 2

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

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

Possible symptoms

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

P2056 Description

The Reductant Dosing Valve (Reductant Injection Valve) is used to meter and atomize the reductant liquid before it is mixed with the exhaust gas. Normal operating frequency is between 3 Hz and .3 Hz. The cooling body contains heat sink fins to keep the injector and reductant below the boiling point. If the sensed temperature is nearing the maximum temperature threshold, reductant spray will be increased in quantity to actively cool the valve.
OBDII Code P2056 - Reductant Injection Valve Circuit/Open Bank 2 Unit 2 - AutoCodes.com

P2056 Information for specific makes

  • P2056 CHEVROLET Reductant Injection Valve Circuit/Open Bank 2 Unit 2
  • P2056 DODGE Reductant Injection Valve Circuit/Open Bank 2 Unit 2
  • P2056 FORD Reductant Injection Valve Circuit/Open Bank 2 Unit 2
  • P2056 GMC Reductant Injection Valve Circuit/Open Bank 2 Unit 2

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P2056 Comments

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