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B0400 Engine Trouble Code

Meaning of B0400 engine trouble code is a kind of body trouble code and when your car's 'B0400 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.

B0400 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 B0400 code is occuring now you should check B0400 repair processes.
Now don't ask yourself; What should you do with B0400 code ?
The solution is here :

B0400 Possible Solution:

B0400 Engine

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.

B0400 Code Meaning :

B 0 4 0 0
OBD-II Diagnostic Body (B) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low O2 Sensor Heater Circuit Malfunction Cold Start Injector 1 Malfunction Shift Solenoid E Performance or Stuck Off

Is the fuel pump sometimes not priming when you turn the key to ON(II)? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above.

B0400 OBD-II Diagnostic Body (B) Trouble Code Description

B0400 engine trouble code is about Shift Solenoid E Performance or Stuck Off.

Main reason For B0400 Code

The reason of B0400 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

B0400 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.