P1421 Engine Trouble Code
Meaning of P1421 engine trouble code is a kind of powertrain trouble code and when the check engine light comes P1421 code on the first you should check is the gas cap. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. Continue driving and see if the check engine light turns off. Alternately, you can purchase a gas cap for about $3 at an auto parts store. All you need to do is take the old one off and screw on the new one. If you've already made it to the store, you might as well just replace it. While not car-threatening, it's good to take care of this right away to improve gas mileage.
P1421 Fault Symptoms :
If one of these reasons for P1421 code is occuring now you should check P1421 repair processes.
Now don't ask yourself; What should you do with P1421 code ?
The solution is here :
P1421 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.
P1421 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Fuel And Air Metering||O2 Sensor Heater Circuit Malfunction||Turbocharger Boost Sensor A Circuit Low||Crankshaft Position Sensor A Circuit Low Input|
The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions.
P1421 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP1421 OBD-II Trouble Code Catalyst Damage is one of the definitions for the P1421; however your vehicles manufacturer may have a different definition for the P1421 code. Please check below for your specific make. P1421 code.
Main reason For P1421 CodeThe reason of P1421 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.
P1421 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.