LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2017 >> WRX Base >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> Brake Vacuum Control System DTC
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Brake Vacuum Control System DTC

BRAKE VACUUM CONTROL SYSTEM DIAGNOSTIC TROUBLE CODE IDENTIFICATION

DTC Item Content of diagnosis Reference
11 Sensor Output Out of Range Brake booster pressure sensor output error <Ref. to DTC 11 SENSOR OUTPUT OUT OF RANGE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
12 Compare Error in Other Sensor Brake booster relative pressure comparison error <Ref. to DTC 12 COMPARE ERROR IN OTHER SENSOR , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
13 Pressure Sensor Signal Freeze Brake booster pressure sensor abnormal stuck <Ref. to DTC 13 PRESSURE SENSOR SIGNAL FREEZE , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
21 Discrepancy in Relays (On) Unmatched drive of brake vacuum pump relay and brake vacuum pump <Ref. to DTC 21 DISCREPANCY IN RELAYS (ON) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
22 Discrepancy in Relays (Off) Unmatched drive of brake vacuum pump relay and brake vacuum pump <Ref. to DTC 22 DISCREPANCY IN RELAYS (OFF) , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
23 Pump Continuous Work Continuous drive error of brake vacuum pump <Ref. to DTC 23 PUMP CONTINUOUS WORK , Diagnostic Procedure with Diagnostic Trouble Code (DTC).>