U0209

Lost Communication With Seat Control Module B

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Seat adjustment functions do not work
Heated seat doesn't work
Check Engine Light Is On
Errors in the memory of other modules
Seat does not save position settings

Causes

Open or short circuit in the module power supply circuit
Damage to the wiring harness to the module
Seat control module B malfunction
Connector problems or contact corrosion
Main ECU malfunction

How to Fix

Check fuses associated with the seat system
Inspect the wiring harness and module connectors for damage.
Check the supply voltage and ground on the module
Scan other modules for related errors
Replace seat control module B if necessary
Repair only from an authorized dealer

Related codes

U0208 U0210 U0211