P0903 Engine Trouble Code
Meaning of P0903 engine trouble code is : P0903 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.
P0903 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.
P0903 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Intake Valve Control Solenoid Circuit Low||Injector Circuit Malfunction - Cylinders||Cold Start Injector 1 Malfunction||Exhaust Gas Recirculation Sensor B Circuit High|
The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.
P0903 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP0903 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.
Reason For P0903 CodeThe reason of P0903 OBD-II Engine Trouble Code is Injector Circuit Malfunction - Cylinders.
Parts or components should not be replaced with reference to only a P0903 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.