U0278

Lost Communication With Seat Control Module L

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–278 (est.)

Symptoms

Seat adjustment functions do not work
Check Engine Light Is On
Seat memory settings disappear
Seat heating or ventilation may not work

Causes

Open or short circuit in the module power supply circuit
Damage to the wiring harness to the module
Seat control module malfunction
Connector problems or contact corrosion
Module software failure

How to Fix

Check fuses associated with the module
Inspect the wiring harness and connectors for damage.
Check power and ground on the module
Scan the module for additional errors
Replace the seat control module if necessary
Repair only from an authorized dealer

Related codes

U0277 U0279 U0280