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Citroen Big Fifteen P0491 Engine Trouble Code

When your car's 'Citroen Big Fifteen P0491 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.

Citroen Big Fifteen 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 Big Fifteen 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 Big Fifteen 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