Code Search

Please fill the "Code Box" to find engine fault code.

Car Models :

Please select your car.

How To Clear Check Engine Lights ?

Ways to clear check engine light on car panel.

Check Engine Light Dictionary

Ways to clear check engine light on car panel.

P3986 Engine Trouble Code

Meaning of P3986 engine trouble code is a kind of powertrain 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.

P3986 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for P3986 code is occuring now you should check P3986 repair processes.
Now don't ask yourself; What should you do with P3986 code ?
The solution is here :

P3986 Possible Solution:

The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time.If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver.

P3986 Code Meaning :

P	3	9	8	6
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine	Ignition System Or Misfire	Injector Circuit Malfunction - Cylinders	Ignition/Distributor Engine Speed Input Circuit Malfunction	Ignition Coil A Primary/Secondary Circuit Malfunction

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.

P3986 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P3986 engine trouble code is about Ignition Coil A Primary/Secondary Circuit Malfunction.

Main reason For P3986 Code

The reason of P3986 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.

P3986 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.

	Example: 0140