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DTC C1304/27 EPS Control System Malfunction: Description

WARNING: This page is about a different car, the 2006 Lexus GS 430 and 2006 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.

The skid control ECU communicates with the power steering (EPS) ECU via CAN communication.

If a malfunction in the electric power steering (EPS) control system is detected, cooperative control of the steering is prohibited by the fail-safe function.

DTC DETECTION CONDITION AND TROUBLE AREA CHART

DTC No. INF Code DTC Detection Condition Trouble Area
C1304/27  376 The EPS system fail signal continues to be output for 5 seconds or more.
  • EPS control system
  • Brake control system