The car in question is my wife's 2018 Mazda 3 2.0L Skyactiv. She tells me around noon, as I am vacuuming the inside (she is a mess) that the check engine light went on late last night. Why? How do I know until I put my scanner on. So I scan for codes and get six of them from Camshaft, to Fuel, to Heater, and all mention the word circuit. I focus on that word rather than the actual sensors.
Thinking back she was in Las Vegas some months ago and when she drove home. That was the day the roads into California were flooded out. She got through but told me the water was high. Yeah high is right as I saw the signs on mud inside the engine compartment up high. So I am thinking that this is why I am getting these circuit DTCs and most likely the connectors than wires. Better later, right? Get a diagram out so I can locate all the sensor connectors and not miss any.
In the garage I pull out my can of DeoxIT that I use for my vintage stereos. I examine the male end and all show shiny silver pins with no signs of moisture past the gasket. So I spray into the female side, dab up the excess, and then push back and forth over the pins. Also do the same with the two master connectors to the ECM. Reconnect and start the car. Four of the six DTCs are gone replaced by four new ones. So did them all again, even though some were cleared, and let them stay disconnected for several hours as DeoxIT stays wet. This just in case. Well I just ran the car, now 4 hours later, and not one DTC thrown. Let's see what happens this coming week.
Advice to wife: I don't care if you have to get back by Sunday night you need to spend the night if the roads home are flooded.
Thinking back she was in Las Vegas some months ago and when she drove home. That was the day the roads into California were flooded out. She got through but told me the water was high. Yeah high is right as I saw the signs on mud inside the engine compartment up high. So I am thinking that this is why I am getting these circuit DTCs and most likely the connectors than wires. Better later, right? Get a diagram out so I can locate all the sensor connectors and not miss any.
In the garage I pull out my can of DeoxIT that I use for my vintage stereos. I examine the male end and all show shiny silver pins with no signs of moisture past the gasket. So I spray into the female side, dab up the excess, and then push back and forth over the pins. Also do the same with the two master connectors to the ECM. Reconnect and start the car. Four of the six DTCs are gone replaced by four new ones. So did them all again, even though some were cleared, and let them stay disconnected for several hours as DeoxIT stays wet. This just in case. Well I just ran the car, now 4 hours later, and not one DTC thrown. Let's see what happens this coming week.
Advice to wife: I don't care if you have to get back by Sunday night you need to spend the night if the roads home are flooded.
