2791 5

UnclassifiedEmissions

What This Code Means

Main Relay switched off before the After-run finished; Main Relay switched off before the request of the ECU; Electric failure in the power stage of the electric EGR Valve actuator (H-Bridge)

Possible Causes

  • Incorrect opening of Main Relay
  • Electric failure in H-Bridge switches (High side or Low side)

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Get a diagnosis walkthrough for 2791 5 on your specific Winco unit — cited to the OEM manual, not a forum guess.

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