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U1645 Engine Trouble Code

Meaning of U1645 engine trouble code is a kind of network trouble code and U1645 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,140 and you can't do it yourself unless you're an experienced mechanic.

U1645 Fault Symptoms :

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

If one of these reasons for U1645 code is occuring now you should check U1645 repair processes.
Now don't ask yourself; What should you do with U1645 code ?
The solution is here :

U1645 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.

U1645 Code Meaning :

U	1	6	4	5
OBD-II Diagnostic Network (U) Trouble Code For Engine	Fuel And Air Metering	Fuel Temperature Sensor B Circuit Range/Performance	Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)	Crankshaft Position Sensor B Circuit Malfunction

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

U1645 OBD-II Diagnostic Network (U) Trouble Code Description

U1645 engine trouble code is about Crankshaft Position Sensor B Circuit Malfunction.

Main reason For U1645 Code

The reason of U1645 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

U1645 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