What codes will a bad ECM cause?
A bad or failing ECM may produce any of the following 5 symptoms to alert the driver of a potential problem.
- Check Engine Light Turns On. An illuminated Check Engine Light is one possible symptom of a problem with the ECM.
- Engine Stalling or Misfiring.
- Engine Performance Issues.
- Car Not Starting.
- Poor Fuel Economy.
Where can I find my ECM?
This is why when it comes to locating your ECM it’s best to consult your vehicle’s owner’s manual to find the exact location, but typically they are found in the engine compartment, under the passenger floorboard, under the seats, or behind the kick panels.
What is the code for ECM?
Error code P0202 occurs when the PCM (Powertrain Control Module) or ECM (Engine Control Module) detects a cylinder 2 injection circuit malfunction.
How to reset your ECM ( Engine Control Module )?
2- Disconnect the negative terminal from the battery using a wrench or a socket that fits, you should leave it unplugged for approximately 5-10 minutes. 3- Once the time has passed you should now turn the headlights “on” and “off” twice to drain the Engine Control Module from any remaining power.
When to replace your PCM ( and when not to )?
The onboard computer is the brains of the engine control system, so when the brain isn’t functioning correctly neither is the engine or anything else that the microprocessor controls – which may include the charging system, transmission, various emission controls and communications with other onboard control modules.
What to do if your ECM is still working?
Start the vehicle and allow it to idle for five minutes. If there are still conflicting codes, the “Check Engine” light will come on. Some vehicles will require a reset code for the radio. Contact the dealer to find out what the codes are and how to input them.
Where is the ECM located in a car?
The location of the ECM depends on the make and model of the vehicle. In most vehicles, the ECM is located in the engine compartment. Some vehicles have the ECM mounted under the driver’s or passenger seat, however. Open the engine compartment to access the battery.