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JCV2118, ASE Certified Technician
Category: Hyundai
Satisfied Customers: 188
Experience:  13 years experience in automotive industry. Electrical Engineer full degree firts..
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Ck. engine light on. scanner can't communicate through DLC.

Customer Question

ck. engine light on. scanner can't communicate through DLC. intermittent tachometer operation. where do i start?
Submitted: 1 year ago via Mitchell1DIY.
Category: Hyundai
Expert:  JCV2118 replied 1 year ago.

the car starts and runs ?

you just got a check engine light ?

the scanner you have wont communicate or wont power up ?

Customer: replied 1 year ago.
Starts and runs. Ck. Engine light on. Scanner powers up with no communication. Tach works sometimes .
Expert:  JCV2118 replied 1 year ago.

Ok, so what scanner are you using ? First thing I would do is to try and communicte with other modules to see if I have a comunications issue sonewhere in the car.

Customer: replied 1 year ago.
Scanner communicates with other vehicles. Problem in vehicle . Ck ground L\side kick panel. Voltage drop .02
Expert:  JCV2118 replied 1 year ago.

sorry, what I meant was if the scanner communicates with other modules in the same car. I am trying to see if there is a specific area of the car that is out of the communications network, let me know.