RVMP Flex Power error code No throttle response (idle or load)
Engine runs but the throttle stepper motor never moves — no small movements at idle, no adjustments when load is applied. Inverter commands the stepper via digital signal; no movement means either the harness, the stepper, or the inverter has failed.
What to check, and in what order, is in the app. The flow RVMP — starts but runs rough / 'hunting' at idle walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- RVMP_FlexPower_4000i_5500i_Service.txt
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