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P2048 - REDUCTANT Injection Valve Circuit Low (Bank 1 Unit 1)

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P2048 - REDUCTANT INJECTION VALVE CIRCUIT LOW (BANK 1 UNIT 1)

Description:  The powertrain control module (PCM) monitors the reductant injector circuits to the PCM for high and low voltage. The test fails if the voltage exceeds or falls below a calibrated limit for a calibrated amount of time.
Possible Causes: 
  • RDINJPWR circuit short to ground
  • RDINJGND circuit short to ground
Diagnostic Aids:  The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST RK .