Code 51 - Prom Problem (2.8/4.3/5.0/5.7/7.4L)
Check that all pins are fully inserted in socket. If okay, replace PROM, clear memory and recheck. If Code 51 appears, replace ECM.
Check that all pins are fully inserted in socket. If okay, replace PROM, clear memory and recheck. If Code 51 appears, replace ECM.