P0605 – Computer or wiring fault
Internal control module read only memory (ROM) error
Computer and outputs · generic OBD-II code
Drive it only if you have to, gently and not far. Get it fixed right away.
Check this first
Have power, grounds and the battery checked before anyone talks about a new computer.
What usually fixes it
In the order a good shop checks them. Typical total: $166–$1,906 at $130 an hour.
Battery, grounds and connections
Most computer codes come from poor power.
Control module
A genuinely failed module usually needs programming.
This is the advice for this family of codes – Drive DTC doesn't have a page written for this exact code yet.
What the vehicle can tell you itself
A stored code is a headline, not the story. The vehicle also holds the conditions when it happened, how close the part is to the limit it fails at, what the fuel trims are doing, and whether the fault is still happening right now. Drive DTC reads all of it with a USB adapter and a Windows PC – and it can't change a single setting on the vehicle.
See what your vehicle says about P0605
Codes in plain English, what usually causes them, what the repair costs, and whether it's safe to drive.