How do you know if the check engine light is broken and not operating?

How do you know if the check engine light is broken and not operating? 2 Answers

I have a 2004 dodge neon. the check engine light came on, the car started running rough and eratic. then the car shuts down and will not start back up. the vehicle will not even turn the starter over. no clicking or nothing. the vehicle is at home and I have no access to a trouble code scanner. could you please give me some pointers? 2 Answers

2004 dodge neon. the vehicle will not turn over at all after dying out , after the check engine light came on.

I have a 2005 dodge neon sxt the car was overheating and I replaced the thermostat after about 300 miles I check engine light came on for it again but it's not over heating and fluids are good. 3 Answers

The radiator bubbles when I turn the car off but it never overheats actually stays cooler than before

Check engine light 4 Answers

My neon just all of a sudden the check engine light came on car started to stall out and when i checked with the code reader. The code camw back P0340

Check engine light 1 Answer

Why my check engine light on and why does it have a hard time getting up a hill