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Oldsmobile Silhouette P0303 Engine Trouble Code

When the check engine light comes Oldsmobile Silhouette P0303 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.

Oldsmobile Silhouette P0303 Code Meaning :

P 0 3 0 3
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low Throttle/Pedal Position Sensor/Switch A Circuit Intermittent Cold Start Injector 1 Malfunction Exhaust Gas Recirculation Sensor B Circuit High
Oldsmobile Silhouette Engine

When you check Oldsmobile Silhouette car engine light came on code P0303 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However manufacturer may have a different definition for the P0303 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0303 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting
If one of these reasons for P0303 code is occuring now you should check P0303 repair processes.
Now don't ask yourself; What should you do with P0303 code ?
The solution is here :

Oldsmobile Silhouette P0303 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.

P0303 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0303 OBD-II Trouble Code When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module ( P0303 code.

Reason For P0303 Code

The reason of P0303 OBD-II Engine Trouble Code is Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.

Parts or components should not be replaced with reference to only a P0303 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.