Check P0091 Fault Code

When you check engine light came on code P0091 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 P0091 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

Parts or components should not be replaced with reference to only a P0091 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.

P0091 Possible Fix :

Overheating can be caused by a few different factors. The simplest cause may be that your car needs more coolant. Yet depleted coolant can be caused by bigger problem, like leaks or faulty hoses, so always check for the underlying cause before simply filling it up with more. Another common reason for overheating may be that the radiator fan which keeps your engine cool is faulty, so check your fan motor connection and fan thermostat.

P0091 OBD-II Diagnostic Powertrain (P) Trouble Code Description P0091 OBD-II Trouble Code Fuel Pressure Regulator 1 Control Circuit Low is the generic definition for the P0091; however your vehicles manufacturer may have a different definition and information for the P0091 code. Reason For P0091 Code The reason of P0091 OBD-II Fault Code Check is P0091 Fuel Pressure Regulator 1 Control Circuit Low.

P0091 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.

What does fault code P0091 mean ? What does a diagnostic reading P0091 mean ? How to fix OBD2 Code P0091 ? What do we know about P0091 code ?

How to Clear P0091 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.