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U3988 Engine Trouble Code

Meaning of U3988 engine trouble code is a kind of network trouble code and U3988 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,200. Taking your car into a shop will cost you around $210 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

U3988 Fault Symptoms :

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

If one of these reasons for U3988 code is occuring now you should check U3988 repair processes.
Now don't ask yourself; What should you do with U3988 code ?
The solution is here :

U3988 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.

U3988 Code Meaning :

U	3	9	8	8
OBD-II Diagnostic Network (U) Trouble Code For Engine	Ignition System Or Misfire	Injector Circuit Malfunction - Cylinders	Ignition/Distributor Engine Speed Input Circuit Malfunction	Clutch Position Sensor Circuit Malfunction

Regarding the U3988 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.

U3988 OBD-II Diagnostic Network (U) Trouble Code Description

U3988 engine trouble code is about Clutch Position Sensor Circuit Malfunction.

Main reason For U3988 Code

The reason of U3988 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.

U3988 DTCs may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.

	Example: 0140