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P0601 fault code: what it means

P0601: ECM internal memory checksum error.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. faulty ECM
  2. needs ECM reprogramming

P0601 by make

Suzuki

ECM internal memory checksum error.

Usual causes: faulty ECM; needs ECM reprogramming

Not sure what P0601 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.