Frigidaire Refrigerator Error Code E6

The E6 code signals a communication fault between the main control board and the display control board. The two boards are unable to exchange data signals properly, which triggers this alert. The issue often originates at terminal CN8 on the main control board, where a loose or contaminated connection interrupts the signal.

A reset may temporarily clear the E6 code, but if the underlying connection problem at CN8 or the wiring harness is not addressed, the error will return. Clearing the code without fixing the root cause does not restore reliable communication between the boards. Always inspect and reseat the terminal before relying on a reset.

If the fix is simply reseating and cleaning the CN8 terminal, the repair cost may be limited to a service call fee, typically in the range of $75 to $150. If the wiring harness needs replacement, parts and labor could range from $100 to $250. Replacing a failed control board generally runs between $150 and $400 depending on the board and labor costs in your area.

Start by locating terminal CN8 on the main control board, pulling it out, and firmly reconnecting it. Clean out any dust or debris inside the terminal before reseating it. If the error returns, inspect the wiring harness between the two boards for damage. If the harness is intact, one of the two control boards may need to be replaced.

The E6 fault itself is not a direct safety hazard, but it does mean the two control boards are not communicating properly, which can affect temperature control and other refrigerator functions. Food safety could become a concern if the fault prevents the compressor or cooling system from operating correctly. It is best to diagnose and resolve the error promptly.