Check P2421 Fault Code
When you check engine light came on code P2421 the reason should be . However your vehicle's manufacturer may have a different definition for the P2421 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.
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Parts or components should not be replaced with reference to only a P2421 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing. |
P2421 Possible Fix :
The engine relies on the glow plugs to generate heat to help with the combustion cycle. Some engines only use the glow plugs when cold but others will allow the glow plugs to work when the ECU (vehicle's computer) needs them to be on to help with combustion. Problems in this area will cause diesel engine starting problems, uneven running and white smoke when the engine is cold.
P2421 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP2421 Evaporative Emission System Vent Valve Stuck Open so you have to check ODB-II Fault Code Check list.Reason For P2421 CodeThe reason of P2421 OBD-II Fault Code Check is P2421 Evaporative Emission System Vent Valve Stuck Open. |
P2421 Solution:
The firing order is an important part of the overall design of the engine and is determined during the design of the engine to eliminate as much engine vibration as possible. If the firing order is changed or adjusted, the ignition from the spark plug is delivered at the wrong time and the engine functions poorly or does not run. The firing order for a particular engine is typically found in the repair manual specific to that model.
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What does fault code P2421 mean ?
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How to Clear P2421 Trouble Code
An OBD 2 scanner is the best and safest way to erase a DTC from your car's system. This scanner communicates with the car's computer and instructs the computer to erase the code. It does not change or tweak the settings from inside the car or its systems.