Hi there,
New member here chasing some sage advise. My 2007 3.5 V6 ML Triton is producing a P0125 (Insufficient Coolant Temperature for Closed Loop Fuel Control) error code. It appears to occur on longer runs at about 40 minute mark. On shorter drives it doesn't appear and will actually clear its self after a few cycles of shorter trips. Triton seems to run fine when Check Engine Light (CEL) is on.
I've ordered a new Engine Coolant Temp (ECT) sensor and hope this will be the solution. Anyone else experienced this and better still found a solution?