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B3851 Engine Trouble Code

Meaning of B3851 engine trouble code is a kind of body trouble code and B3851 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.

B3851 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 B3851 code is occuring now you should check B3851 repair processes.
Now don't ask yourself; What should you do with B3851 code ?
The solution is here :

B3851 Possible Solution:

B3851 Engine

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.

B3851 Code Meaning :

B 3 8 5 1
OBD-II Diagnostic Body (B) Trouble Code For Engine Ignition System Or Misfire Engine Oil Temperature Sensor Malfunction Cylinder 1 Injector Circuit Low Crankshaft Position Sensor A Circuit Low Input

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.

B3851 OBD-II Diagnostic Body (B) Trouble Code Description

B3851 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.

Main reason For B3851 Code

The reason of B3851 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

B3851 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.