What is an ECM-relay and where is it located?
Hey there. The ECM relay on this vehicle is called an auto shutdown relay (https://www.yourmechanic.com/services/automatic-shutdown-relay-replacement) and is located in the engine compartment integrated power module control box. The P0052 (https://www.yourmechanic.com/article/p0052-obd-ii-trouble-code-ho2s-heater-control-circuit-high-bank-2-sensor-1-by-spencer-clayton) code you are getting is for the passenger side O2...
