Service and Repair Manual June 2021
Ford MSG-425 Engine Fault Codes
154 GS
â„¢
-84 • GS
â„¢
-90 Part No. 1306587GT
Megajector voltage supply high
Megajector voltage supply low
Megajector internal actuator fault detection
Megajector internal circuitry fault detection
Megajector internal comm fault detection
isfire detected
1 high
1 low
U2 high
2 low
analog PD1 high
1 low
3 high
3 low
CHT higher than expected 1
CHT higher than expected 2
-Park interlock failure
1 high
analog PUD1 low
2 high
2 low
3 high
1 high
1 low
2 high
2 low
3 high
3 low
2 high
2 low
3 high
3 low
2 simultaneous out of range
1 loss
2 loss
3 loss
d interrupt
CAN addresss conflict failure
For further engine fault code troubleshooting and
diagnostic information, refer to the Ford MSG-425
EFI Diagnostic Manual (EDI part number
1080030).
-425 EFI Diagnostic Manual