P1721 Engine Trouble Code
Meaning of P1721 engine trouble code is a kind of powertrain trouble code and when your car's 'P1721 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.
P1721 Fault Symptoms :
If one of these reasons for P1721 code is occuring now you should check P1721 repair processes.
Now don't ask yourself; What should you do with P1721 code ?
The solution is here :
P1721 Possible Solution:
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.
P1721 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Fuel And Air Metering||Fuel Rail Pressure Sensor Circuit Malfunction||Turbocharger Boost Sensor A 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.
P1721 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP1721 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.
Main reason For P1721 CodeThe reason of P1721 OBD-II Engine Trouble Code is Fuel Rail Pressure Sensor Circuit Malfunction.
P1721 DTC reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.