Pcm Code P051 - Prom Error

Ensure PROM is fully inserted in socket. If PROM is fully inserted, replace PROM, clear memory and recheck. If PCM Code P051 reappears, replace PCM.

See cautions under ELECTRONIC CONTROL MODULE (ECM) in I - SYS/COMP TESTS article in this section when replacing PROM or PCM.

Fig 1: PCM Code P051 Schematic - PROM Error

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