Note: Allpar does not take responsibility for the veracity of any information or opinions here, does not claim expertise, and is not responsible for any consequences. Please proceed at your own risk.



Chrysler Fault Code 43: Ignition coil driver circuit open or shorted

Code 43 indicates that the ignition coil driver circuit is open or shorted; it will not light the power-limited light or cause limp mode. Possible reasons include:

Poor wiring or connection - Read the page How to troubleshoot drivability issues. Check the wiring and connections from the logic module to the power module.   Clean and re-grease the connectors with dielectric grease.

Defective ignition coil driver transistor - Replace the power module (or SMEC).

Ignition coil failure – The coil’s primary is measured across the two studs on the top of the coil. A measurement of zero ohms means the primary coil is not open. Measurements of a very high ohm reading would indicate a defective coil.

Sensors, Switches, and Other Systems | Main Repairs Page | EEKs

We make no guarantees regarding validity or accuracy of information, predictions, or advice — see the terms of use and privacy policy. Copyright © 1994-2000, David Zatz; copyright © 2001-2017, Allpar LLC (except as noted, and press/publicity materials); all rights reserved. Dodge, Jeep, Chrysler, Ram, and Mopar are trademarks of Fiat Chrysler Automobiles.

Rob Heglboom and Ram 1200
New midsize Rams?

Toluca to supply EU?
china dodge
Dodge lives in China

All Mopar Car and Truck News



Sergio speaks, Detroit ’17 Chrysler Portal Mopar in Detroit, 2017

Dodge’s electric sports car Ram: the symbol Best and worst of ’16