October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Code 51 - Prom Error Indication

Fig 1: Flow Chart, Code 51 - Prom Error Indication

Fig 2: Flow Chart, Code 51 - Prom Error Indication

PROM is either installed incorrectly, defective, or has the wrong part number. Check for proper installation and application. If Part number is correct and problem still exists, replace PROM.

WARNING: Any time the PROM is installed backwards and the ignition switch is turned to ON, the PROM will be destroyed.