What causes code U1000?
What causes code U1000?
What Does the U1000 Code Mean? Circuit issues, such as damaged wiring or poor connections, can cause the U1000 code. Dedicated control modules control the brakes, engine, transmission, and other vital systems in your car. These computers communicate over a data bus.
Will a bad PCM drain battery?
Battery drain or dead battery A failed ECM power relay can also cause a battery drain or dead battery. If the relay shorts it can leave power on to the computer, even when the vehicle is turned off. Without it the entire engine management system will be disabled and the vehicle will not run.
