Wa500 komatsu i have a code 103 code ca357 it says engine system error.It came on with the regent burn off.Took the filter off the regent and cleaned it.That code went out but the ca357 stayed on.how do I fix it
Please see attached troubleshooting. Not sure if you have a WA500-7 or -8 but troubleshooting should remain the same. Mass Air Flow sensor is located in air filter housing inboard of air filters. If you remove both air filters you will see a screen in the housing with the sensor behind that screen. To remove the sensor there a couple of screws on top, outside of air filter housing.