U0939 Engine Trouble Code
Meaning of U0939 engine trouble code is a kind of network trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $240-$400 depending on the car, but that's usually the cost of parts because the labor is relatively simple.
U0939 Fault Symptoms :
If one of these reasons for U0939 code is occuring now you should check U0939 repair processes.
Now don't ask yourself; What should you do with U0939 code ?
The solution is here :
U0939 Possible Solution:
Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.
U0939 Code Meaning :
|OBD-II Diagnostic Network (U) Trouble Code For Engine||Intake Valve Control Solenoid Circuit Low||Injector Circuit Malfunction - Cylinders||Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)||Reverse Input Circuit|
The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.
U0939 OBD-II Diagnostic Network (U) Trouble Code DescriptionU0939 engine trouble code is about Reverse Input Circuit.
Main reason For U0939 CodeThe reason of U0939 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.
Parts or components should not be replaced with reference to only a U0939 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.