P0091 Engine Trouble 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.
P0091 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,000. Taking your car into a shop will cost you around $200 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.
P0091 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Intake Valve Control Solenoid Circuit Low||Cylinder 4 Contribution/Balance Fault||Glow Plug/Heater Circuit 'A' Malfunction|
Regarding the P0091 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter.
P0091 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP0091 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. P0091 code.
Reason For P0091 CodeThe reason of P0091 OBD-II Engine Trouble Code is .
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.