
It isn’t recommended to drive with a faulty ECU, but it is possible to keep driving the vehicle.

While the PCM is used in newer models to control almost all engine functions. The main difference between the two is that the ECM controls specific parts of the engine, regulating and sending commands. Most people, including automobile technicians, confuse the two for each other. Is there a difference between ECM and PCM? As with buying new, if you have someone else install your replacement remanufactured ECM, you could be looking at additional hundreds of dollars of labor costs. If the engine control module just needs to be tested, analyzed, and reprogrammed, it should cost you between $150 and $300. Several parts may experience wear due to constant friction, and engine parts may loosen because of vibrations. While it’s built to last, it needs to be reprogrammed to ensure that everything is functioning optimally.

Here are some telltale signs that indicate there’s a problem with the ECM:

Is there a difference between ECM and PCM?.How much does it cost to reprogram ECM?.Does a used ECM need to be reprogrammed?.
