OBD2 Error Code P0606: How to Fix It

Q: Can I drive my car with error code P0606?

It's not recommended to drive with P0606 as it indicates a serious PCM fault that can cause unpredictable engine behavior, stalling, or complete failure to start. Drive only to a safe location for repairs.

Q: How much does it cost to fix P0606?

Costs vary widely depending on the root cause. Simple fixes like battery issues may cost $20-50, while PCM replacement can range from $800-2000 including parts, labor, and programming.

Q: What causes PCM processor faults?

Common causes include voltage spikes from jump-starting, water damage, internal component failure due to age, overheating, or manufacturing defects. Poor battery connections can also trigger false P0606 codes.

Q: Can a bad battery cause P0606?

Yes, low voltage or unstable power supply from a failing battery or corroded connections can cause the PCM to malfunction and set P0606. Always check battery and charging system first.

Q: Is P0606 covered under warranty?

PCM failures may be covered under powertrain warranty if the vehicle is still within the warranty period. Check your warranty terms and contact your dealer for coverage verification.

Abstract

OBD2 error code P0606 indicates a critical PCM (Powertrain Control Module) processor fault, meaning the computer that controls your engine and transmission has detected an internal failure. This is a serious issue that can cause poor engine performance, stalling, or prevent your vehicle from starting altogether.