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P1584 fault code: what it means

P1584: IMA motor current W-phase signal circuit fault.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. motor power inverter
  2. IMA motor wiring

P1584 by make

Honda

IMA motor current W-phase signal circuit fault.

Usual causes: motor power inverter; IMA motor wiring

Mercedes-Benz

Brake pedal switch fault. Cruise control or shift lock may not work.

Usual causes: faulty brake light switch; wiring fault

Not sure what P1584 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.