Broozevee

My 2005 Manual Honda Element has green key light flashing but no check eng light on and battery light on at all w key on eng off. Data link can not read ecu w code reader. Vehicle cranks but no start. Vehicle started the day before. All fuses and ground had been checked and good at ecu and engine. Has anyone had this issue? Thank you

tech8

The green blinking light is related to the Immobilizer. If the Immobilizer light is blinking, then it may be due to a weak battery or the Immobilizer System is not recognizing the key transponder. Check the car battery first.

Broozevee

Sorry forgot to mention that it has a brand new battery

tech8

In your first post, the way it was worded, the part regarding the battery light is not clear. Is the battery light on?

If so, the battery symbol is related to the charging system. Even with a new car battery, if the alternator is not charging properly then the battery may not hold enough power to start the car.

Broozevee

The Battery light does not come on. Neither the check eng light. Does not come on even when I turn the key ignition to on (koeo)

tech8

If you have a voltmeter, measure the voltage on the car battery.

It is possible the ECM/PCM (located behind the glove box) may be bad. Sometimes capacitors get blown or leak, etc. inside the ECM/PCM.

dek112

Did you ever figure this out? I’m having the same exact issue.