General Motors Powertrain

DTC 422

UnclassifiedGeneral

What This Code Means

MIL-On during active fault (and for 5 seconds after active fault clears)

Possible Causes

  • •Injector coil shorted
  • •Battery voltage at ECM less than 16 volts and injector low-side voltage greater than 4 volts for 10 consecutive injector firings while driver is switched on

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