The average cost for an engine control module (ECM) replacement is between $904 and $988.
Labor costs are estimated between $79 and $101 while parts are priced between $825 and $887.
Estimate does not include taxes and fees.
What does an ECM do on a car?
The Engine Control Module (ECM), also called the Engine Control Unit (ECU), ensures that your vehicle operates at optimal performance. The ECM regulates four main parts of your vehicle’s fuel injection system: air-fuel ratio, idle speed, variable valve timing, and electronic valve control.
Can ECM be repaired?
First off, don’t confuse replacing an ECM with repairing one. The end result might be the same — you can drive your car again, after all — but engine control modules and units do sometimes go bad, and they aren’t really designed to be repaired — at least, not by the owner or by an average mechanic.
What can cause an ECM to fail?
Corrosion or damage due to moisture is one of the main reasons for ECM failure. Corrosion can enter the ECM through the wiring harness and moisture can enter by a failure in the seals in the ECM itself.
Photo in the article by “Army.mil”