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P0A1A fault code: what it means

P0A1A: Generator control module fault in the hybrid inverter. On 2010-15 Prius it is listed with P0A94/P324E/P3004 as a sign of inverter failure.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. failed inverter with converter assembly
  2. inverter cooling fault
  3. HV ECU/inverter software

P0A1A by make

Toyota

Generator control module fault in the hybrid inverter. On 2010-15 Prius it is listed with P0A94/P324E/P3004 as a sign of inverter failure.

Usual causes: failed inverter with converter assembly; inverter cooling fault; HV ECU/inverter software

What the repair usually costs

Not sure what P0A1A 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.