When starting the engine warning light turns on and sometimes it does not turn off?

RAJ KAHLON

MEMBER
2019 DATSUN 120Y
2WD
AUTOMATIC
50,000 MILES

Whenever I start the car engine the warning light comes on. Sometimes it goes off by itself, other times it stays on. The car starts but I can't drive it.
I was advised to replace it with a new battery, but I just want to be sure before I buy a new battery.
Any advice will be appreciated.
Thanks,
Raj.

1 Reply

BORIS K

MECHANIC
799 POSTS

Hello Raj,

Does the car start on its own battery, no jump start required?
If so, then it would be unlikely that the battery is causing your issue.

As the engine warning light is on there will be fault codes stored in either ECM or TCM
I would suggest first carrying out a CAN scan using suitable diagnostic equipment.
Once done please post the fault codes on our site for further evaluation

How to:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Cheers, Boris