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B0503 Engine Trouble Code

Meaning of B0503 engine trouble code is a kind of body trouble code and theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $240-$400 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

B0503 Fault Symptoms :

Check engine light comes on
Engine stalling or misfiring
Engine performance issues
Car not starting

If one of these reasons for B0503 code is occuring now you should check B0503 repair processes.
Now don't ask yourself; What should you do with B0503 code ?
The solution is here :

B0503 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.

B0503 Code Meaning :

B	0	5	0	3
OBD-II Diagnostic Body (B) Trouble Code For Engine	Intake Valve Control Solenoid Circuit Low	Fuel Composition Sensor Circuit Malfunction	Cold Start Injector 1 Malfunction	Exhaust Gas Recirculation Sensor B Circuit High

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue.

B0503 OBD-II Diagnostic Body (B) Trouble Code Description

B0503 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Main reason For B0503 Code

The reason of B0503 OBD-II Engine Trouble Code is Fuel Composition Sensor Circuit Malfunction.

B0503 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.

	Example: 0140