CODE 998 NO VREF TO TPS MAP HEGO OR ECT

1992 Ford F-150

Tiny

Anonymous

November, 27, 2012 AT 1:30 AM

Code 998, no vref to tps, map, hego, or ect. No vref coming from pin 26 on harness. ECM failure? Or possible ground problem? Truck runs, but, very rich, stalls, etc. Checked/ cleaned chassis grounds, as well as ohmed pin 46 (ecm ground).
have continuity to ground. Anything else before I buy a new ecm?

FOUND 210 RELATED QUESTIONS

1 Answer

Tiny

ASEMaster6371

November, 27, 2012 AT 1:38 AM

Make sure the powers are there. If they are, yes you have a failed ecm

Roy

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