Nissan 370Z Forum - View Single Post

Silo · 04-25-2015, 05:40 AM

Apparently there are at least TWO types of unexplained limp modes, characterized by

a. high idle and limited power (throttles not opening fully)
b. rev limiter at 3500rpm

Common to both is that there is no CEL and no DTC, and they "reset" by restarting the car. I have also heard for instance a. that although no CEL/DTC is shown, doing a DTC clear/reset (with any kind of OBD tool) while car still idles high will reset the limp mode and car will operate normally again. Kind of a "phantom DTC" so to say.

Are all of you that experienced one or the other issue running flashed ECUs? Please specify which reflash and limp behaviour you had.

04-25-2015, 05:40 AM	#46 (permalink)
Silo Base Member Join Date: Jun 2009 Location: Germany Age: 50 Posts: 38 Drives: 370Z Rep Power: 15	Apparently there are at least TWO types of unexplained limp modes, characterized by a. high idle and limited power (throttles not opening fully) b. rev limiter at 3500rpm Common to both is that there is no CEL and no DTC, and they "reset" by restarting the car. I have also heard for instance a. that although no CEL/DTC is shown, doing a DTC clear/reset (with any kind of OBD tool) while car still idles high will reset the limp mode and car will operate normally again. Kind of a "phantom DTC" so to say. Are all of you that experienced one or the other issue running flashed ECUs? Please specify which reflash and limp behaviour you had. Last edited by Silo; 04-25-2015 at 06:50 AM.