DTC P0132: Front Ho2S Circuit Malfunction (Short Circuit) - Legacy & Outback 2.5L A/T

Perform basic diagnostic procedure. See BASIC DIAGNOSTIC PROCEDURE . Turn ignition off. Disconnect ECM connector B136 (30-pin connector). Using DVOM connected to ground, measure resistance at ECM terminals No. 6, 7, 19 and 20. See Figure. If resistance is not more than 10 ohms, locate and repair short to ground in wiring between ECM and front HO2S. See WIRING DIAGRAMS article. If resistance is more than 10 ohms, replace front HO2S. Clear memory and perform verification procedure. See CLEARING DIAGNOSTIC TROUBLE CODES  and VERIFICATION PROCEDURE  .