what happens when an ect sensor goes bad
Engines with faulty ECT's may have hot starting problems because too much fuel is supplied during cranking. Code 21 â ECT sensor out of range. Broken or damaged wiring, bad ECT sensor. Note that that if the outside air temp is below 50 degrees F that the test for the ECT can be in error. The ECT sensor has absolutely nothing to do with the temperature gauge. They are different animals.