Check MyEngine Light
P0605Starts at: Get it checked this week

Engine computer program memory error

The engine computer tests the memory where its program is stored. The test failed.

Engine computerFix: Best left to a shop

What usually causes it

  1. A failed engine computer
  2. Software that needs an update (reflash) from a shop or dealer
  3. Low battery voltage during an update
  4. A bad ground or power wire

What to watch for

  • The car will not start or stalls
  • The car goes into a low power mode
  • Many warning lights at once

Can I keep driving?

We rate P0605 as Get it checked this week. It is not an emergency yet, but it can get worse. If the light starts flashing, stop driving soon.

Quick answers about P0605

What does P0605 mean?

Engine computer program memory error. The engine computer tests the memory where its program is stored. The test failed.

Can I keep driving with P0605?

We rate P0605 as Get it checked this week. It is not an emergency yet, but it can get worse. If the light starts flashing, stop driving soon.

What usually causes P0605?

The most common causes, in order: A failed engine computer; Software that needs an update (reflash) from a shop or dealer; Low battery voltage during an update; A bad ground or power wire.

Estimates only. A mechanic should confirm. The same code can mean slightly different things on different cars; the app explains it for your exact year, make, model and mileage.