Check P3401 Fault Code

When you check engine light came on code P3401 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P3401 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P3401 Code Reason

Parts or components should not be replaced with reference to only a P3401 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.

P3401 Possible Fix :

There are a number of reasons which can cause a car engine not to start, the most common, of course, being a dead battery. Pay special attention to the noise it makes when you turn the key. Is the car completely silent? If so, there may be a problem with your battery terminal cable connections. Does your car crank over but not start? Then it may be your spark plugs or fuel supply to your engine. In any case, if you're out on the road, try jumpstarting your car then investigating the cause further when you're safely back at home.

P3401 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P3401 OBD-II Trouble Code To provide maximum fuel economy under light load driving conditions, the Engine Control Module (

Reason For P3401 Code

The reason of P3401 OBD-II Fault Code Check is P3401 Cylinder 1 Deactivation/Intake Valve Control Circuit/Open.

P3401 Solution:

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.

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