P1203 Engine Trouble Code
When you check engine light came on code P1203 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 P1203 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.
When the check engine light comes P1203 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.
P1203 Possible Solution:
The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time.If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver.
P1203 Code Meaning :
|OBD-II Diagnostic Powertrain (P) Trouble Code For Engine||Fuel And Air Metering||Manifold Absolute Pressure/Barometric Pressure Circuit High Input||Cold Start Injector 1 Malfunction||Exhaust Gas Recirculation Sensor B Circuit High|
The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions.
P1203 OBD-II Diagnostic Powertrain (P) Trouble Code DescriptionP1203 OBD-II Trouble Code Injector Circuit Open / Shorted Cylinder #3 is one of the definitions for the P1203; however your vehicles manufacturer may have a different definition for the P1203 code. Please check below for your P1203 code.
Reason For P1203 CodeThe reason of P1203 OBD-II Engine Trouble Code is Manifold Absolute Pressure/Barometric Pressure Circuit High Input.
Parts or components should not be replaced with reference to only a P1203 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.