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U3493 Engine Trouble Code

Meaning of U3493 engine trouble code is a kind of network trouble code and U3493 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.

U3493 Fault Symptoms :

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

If one of these reasons for U3493 code is occuring now you should check U3493 repair processes.
Now don't ask yourself; What should you do with U3493 code ?
The solution is here :

U3493 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.

U3493 Code Meaning :

U	3	4	9	3
OBD-II Diagnostic Network (U) Trouble Code For Engine	Ignition System Or Misfire	O2 Sensor Heater Circuit Malfunction	Crankshaft Position Sensor A Circuit Malfunction	Exhaust Gas Recirculation Sensor B Circuit High

Regarding the U3493 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.

U3493 OBD-II Diagnostic Network (U) Trouble Code Description

U3493 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Main reason For U3493 Code

The reason of U3493 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

U3493 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