P0606 – Engine computer fault
Control module processor
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 the power and ground connections at the computer checked before anyone replaces it.
What usually fixes it
In the order a good shop checks them. Typical total: $166–$1,906 at $130 an hour.
Connections, grounds and battery
Low voltage and bad grounds cause most of these codes.
Engine computer (PCM)
A genuine internal fault; it usually needs programming to the vehicle.
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 P0606
Codes in plain English, what usually causes them, what the repair costs, and whether it's safe to drive.