Rpm lower than 500 rpm, dtc p1603 engine stall history
Sunday, June 8th, 2014 AT 8:50 PM
Are you sure that code is correct? I checked 3 references and it isn't listed in any of them for a Toyota. As far as the low idle and stalling history, has anyone checked for vacuum leaks and the idle air control valve (IAC)? The IAC is responsible for maintaining the engine idle speed.