6780M Mariner BOTTOM COWL...

Active Diagnostic Codes
An Active diagnostic code represents a problem with the electronic control system. This problem should be corrected as soon as possible. When an active diagnostic code is generated, a display module such as the Electronic Monitoring System (EMS) may produce a warning.The ECM can generate the following actions when an active diagnostic code is present:
The ECM logs the code into permanent memory.
The ECM generates a diagnostic code on the CAT Data Link.
The ECM generates a Flash Code that will be displayed on the diagnostic lamp.
The warning lamp will be turned on.Possible Performance Effect of Active Diagnostic Codes
Table 1
Possible Performance Effect of Active Diagnostic Codes    
Flash Code    CID/FMI Code    Description of Code    Engine Misfires    Low Power    Reduced Engine Speed    Engine Shutdown    
N/A     545-05     Ether Start Relay open/short to +batt                    
545-06 Ether Start Relay short to ground                    
21     262-03     5 Volt Sensor DC Power Supply short to +batt                    
262-04 5 Volt Sensor DC Power Supply short to ground                    
263-03 Digital Sensor Supply short to +batt                    
263-04 Digital Sensor Supply short to ground                    
24     100-03     Engine Oil Pressure open/short to +batt                    
100-04 Engine Oil Pressure short to ground                    
25     273-00     Turbo Outlet Pressure above normal                    
273-03 Turbo Outlet Pressure open/short to +batt                    
273-04 Turbo Outlet Pressure short to ground                    
26     274-03     Atmospheric Pressure open/short to +batt                    
274-04 Atmospheric Pressure short to ground                    
27     110-03     Engine Coolant Temperature open/short to +batt     X     X     X        
110-04 Engine Coolant Temperature short to ground     X     X     X        
32     91-08     Throttle Position signal abnormal         X     X        
34     342-02     Loss of Secondary Engine Speed signal     X             X (1)    
37     94-03     Fuel Pressure open/short to +batt                    
94-04 Fuel Pressure short to ground                    
42     261-13     Engine Timing calibration required     X     X     X     X    
51     168-02     System Voltage intermittent/erratic     X     X         X    
53     254-12     Electronic Control Module Error     X     X     X     X    
56     253-02     Personality Module mismatch                 X (2)    
268-02 Check Programmable Parameters         X     X