General Information

Electronic Stability Control
C2131 ESS Brake Lamp Relay Error - General Information

Component Location





General Description

Some markets have an Emergency Stop Signal (ESS) function. When a vehicle is in an emergency stop condition, the brake lamp blinks to inform the vehicle behind of the emergency stop. While this function is operating, ESS brake lamp relay flashes the brake lamp.

DTC Description

The HECU monitors the ESS brake lamp relay (ESS) relay for normal operation. If there is an open or short in the relay circuit, this DTC is set.

DTC Detecting Condition





Diagnostic Circuit Diagram