B1251 Engine Trouble Code
Meaning of B1251 engine trouble code is a kind of body trouble code and when your car's 'B1251 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.
B1251 Fault Symptoms :
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If one of these reasons for B1251 code is occuring now you should check B1251 repair processes.
Now don't ask yourself; What should you do with B1251 code ? The solution is here : |
B1251 Possible Solution:
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. |
B1251 Code Meaning :
B | 1 | 2 | 5 | 1 |
---|---|---|---|---|
OBD-II Diagnostic Body (B) Trouble Code For Engine | Fuel And Air Metering | Manifold Absolute Pressure/Barometric Pressure Circuit High Input | Cylinder 1 Injector Circuit Low | Crankshaft Position Sensor A Circuit Low Input |
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.
B1251 OBD-II Diagnostic Body (B) Trouble Code DescriptionB1251 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.Main reason For B1251 CodeThe reason of B1251 OBD-II Engine Trouble Code is Manifold Absolute Pressure/Barometric Pressure Circuit High Input. |
Parts or components should not be replaced with reference to only a B1251 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.