Can a OBDII device mess up the ECU?
Can a OBDII device mess up the ECU?
2-hours later, after flashing the ECU with the recall “fix,” they say the car won’t start, and they suspect the ECU is dead, implying that my OBDII device is the culprit because it messed up the ECU. My question is, are they correct to say that these OBDII devices can mess up the ECU? To my knowledge, they only read, and cannot write to the ECU.
Can a bad ECM cause a car not to start?
4. Car Not Starting. A bad ECM may lead to a vehicle that won’t or is difficult to start. If the ECM fails completely, it will leave the vehicle without engine management control, and will not start or run as a result.
How can I find out if my ECM is failing?
The least invasive way to diagnose your ECM is to connect an onboard diagnostic (OBD or OBD II) tool to the diagnostic port. From there, you can scan to see if your engine computers have produced any error codes. There are many of these codes, and your diagnostic tool’s manual should have information on what they mean.
How does the engine control module ( ECM ) work?
The ECM takes the information from the engine’s various sensors, and uses that information to calculate and tune engine spark and fuel for maximum power and efficiency. The ECM plays a crucial role in newer vehicles, where many (if not all) of the essential functions of the car are controlled by the ECM.
2-hours later, after flashing the ECU with the recall “fix,” they say the car won’t start, and they suspect the ECU is dead, implying that my OBDII device is the culprit because it messed up the ECU. My question is, are they correct to say that these OBDII devices can mess up the ECU? To my knowledge, they only read, and cannot write to the ECU.
What happens when the ECM is not working properly?
When the ECM isn’t adjusting the throttle properly, shifting can feel herky-jerky, as if you’re in the car with a first-time driver learning to work a stick shift. 6. Your Engine Shuts Off for No Reason This is another symptom of an improper fuel-to-air ratio.
How do you Hard Reset a car ECM?
So back to youtube. Apparently, the scanner sometimes messes the ECM and has to be hard reset. This can be done by removing both battery terminals and crossing or connecting them together for about 10 seconds (make sure both terminals are removed from the battery) this will discharge the capacitors and you should be able to start your car again.
Is it possible to mess up the ECU?
Of course, it is possible to mess up the ECU this way, e.g. by trying to flash the wrong firmware, change config data, or whatever the ECU allows to be done via OBDII. But Torque does not know how to do this, and I can’t imagine that it’s possible to send data saying “kill yourself” accidentally.
