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Citroen Ami P0491 Engine Trouble Code

When the check engine light comes Citroen Ami P0491 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.

Citroen Ami P0491 Code Meaning :

P	0	4	9	1
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine	Intake Valve Control Solenoid Circuit Low	O2 Sensor Heater Circuit Malfunction	Crankshaft Position Sensor A Circuit Malfunction	Crankshaft Position Sensor A Circuit Low Input

When you check Citroen Ami car engine light came on code P0491 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However manufacturer may have a different definition for the P0491 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0491 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for P0491 code is occuring now you should check P0491 repair processes.
Now don't ask yourself; What should you do with P0491 code ?
The solution is here :

Citroen Ami P0491 Possible 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.

P0491 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0491 OBD-II Trouble Code The secondary air system detected that there was insufficient mass flow change during pump switching (on/off) P0491 code.

Reason For P0491 Code

The reason of P0491 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

Parts or components should not be replaced with reference to only a P0491 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.

	Example: 0120