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B3945 Engine Trouble Code

Meaning of B3945 engine trouble code is a kind of body trouble code and B3945 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 $2,000 and you can't do it yourself unless you're an experienced mechanic.

B3945 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting
If one of these reasons for B3945 code is occuring now you should check B3945 repair processes.
Now don't ask yourself; What should you do with B3945 code ?
The solution is here :

B3945 Possible Solution:

B3945 Engine

Gasoline engines use spark plugs to cause an explosion of fuel within the cylinder. In a properly timed engine, this explosion occurs at the proper moment to send the piston to the bottom of the cylinder and provide power to the drive shaft. If the plug wires are out of sequence, the explosion occurs at the wrong time. The improper timing of the explosion sometimes pushes the cylinder the wrong direction or interferes with the turning of the crank. As a result, the engine stutters or backfires, if it runs at all.

B3945 Code Meaning :

B 3 9 4 5
OBD-II Diagnostic Body (B) Trouble Code For Engine Ignition System Or Misfire Injector Circuit Malfunction - Cylinders 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.

B3945 OBD-II Diagnostic Body (B) Trouble Code Description

B3945 engine trouble code is about Crankshaft Position Sensor B Circuit Malfunction.

Main reason For B3945 Code

The reason of B3945 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.

B3945 DTC specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.