Code 15: ECA Mem Failure - ?

[Ozz]

My car was a little choppy at lower RPM this weekend, so I pulled codes and among them got "15 ECA MEM FAILURE". So I know the ECA is the computer, and mine is a brand new reman that is 3 years old. It has a chip in it.

I haven't had a chance to look at it yet but aside from making sure the pins in the chip are seated well and the harness is too, what should I look for?

Thanks in advance

 

[jrichker]

The add on chips sometimes cause code 15. Unless it is a custom dyno tune chip, pull it out and try driving the car & dumping the codes again. If it goes away, you know that it is the add on chip causing the problem.

 

[DMAN302]

Dave I also pull the code 15 due to my SCT chip...the computer will not show any other KOER codes while the chip is in place.

 

[Ozz]

These are KOEO codes, FWIW. And it is a custom burned/dyno run chip.

My TPS is out of range as well. Would that be causing my car to die out at idle?

 

[DMAN302]

So is my SCT chip Dave, and yeah TPS out could definately be a contributing factor if not the cause..try to get it under .98V or contact the tuner to see what he was using for a setting when the chip was burnt.

 

[Ozz]

Yea, I couldn't barely get it under 2V yesterday. It's not even close. The parts store, of course, had none so I couldn't do it tonight.

 

[jrichker]

If the TPS refuses to get below 1 volt and you are sure that it isn't setting crooked on the throttle body, check the TPS signal ground.

Adjusting the TPS fails to resolve the problem:
Check the black/white wire resistance. Connect one ohmmeter lead to the black/white wire on the TPS and one lead to the negative post on the battery. You should see less than .5 ohm, more than that indicates a problem. Always take resistance measurements with the circuit powered off.

Clean the 10 pin salt & pepper shaker connectors.

.

 

[Ozz]

Thanks JR. So I should take that measurement with KOEO?