User guide
28 96815 v.3.0
Table 1 Banks Six-Gun Diagnostic Codes
Code Event Course of Action
1,1
Fuel Rail Pressure (FPR) 
Input Voltage Out of Range
Turn ignition OFF and check the 24-Pin and 38-Pin connectors. 
Turn ignition back ON and re-check for presence of code. 
1,2
Manifold Absolute Pressure 
(MAP) Input Voltage Out of 
Range.
Turn ignition OFF and check the 24-Pin and 38-Pin connectors.
Turn Ignition back ON and re-check for presence of code. 
1,3
Six-Gun Switch Input Value 
Out of Range
Turn ignition OFF and make sure either Banks iQ or Six-Gun 
switch is connected to Six-Gun tuner. If Six-Gun switch is 
connected (no Banks iQ), check 2-pin connection on tuner’s 
in-cab cable. Turn ignition back ON and re-check for presence 
of code. 
1,4
(LB7) Barometric Pressure 
Input Voltage Out of Range
Turn ignition OFF and check the 24-Pin and 38-Pin connectors. 
Turn ignition back ON and re-check for presence of code.
(LLY) Barometric Pressure 
CAN Signal Not Available
2,1
Fuel Rail Pressure (FPR) 
Output voltage Out of 
Range.
Turn ignition OFF and check the 24-Pin and 38-Pin connectors. 
Turn ignition back ON and re-check for presence of code.
2,2
Manifold Absolute Pressure 
(MAP) Output Voltage Out 
of Range.
Turn ignition OFF and check the 24-Pin and 38-Pin connectors.
Turn ignition back ON and re-check for presence of code.
2,3
Exhaust Gas Temperature 
(EGT) Sensor Open Circuit.
Turn ignition OFF and check both thermocouple ring-terminal 
connections. Turn ignition back ON and re-check for presence 
of code. 
2,4
(LB7) OBD Signal 
Malfunction 
Turn ignition OFF and check OBD connector and cable. Turn 
ignition back ON and re-check for presence of code. 
3,1
Crankshaft Position (CKP) 
Strand Fault or Internal 
Module Malfunction.
Turn ignition OFF and check the 24-Pin and 38-Pin connectors.
Turn ignition back ON and re-check for presence of code.
3,2
Power Up Error or Internal 
Module Malfunction
Turn ignition OFF and check the 24-Pin and 38 Pin connectors. 
Turn ignition back ON and re-check for presence of code. 
3,3
Low Battery Voltage 
or Internal Module 
Malfunction.
Turn ignition OFF and check the 24-Pin and 38-Pin connectors. 
Turn ignition back ON and re-check for presence of code.
3,4
CAN Communications 
Error with Vehicle.
Turn ignition OFF and check the 24-Pin and 38-Pin connectors.
Turn ignition back ON and re-check for presence of code.
4,1
Injection Control Signal 
Fault or Internal Module 
Malfunction
Turn ignition OFF and check the 24-Pin and 38-Pin connectors.
Turn ignition back ON and re-check for presence of code.
4,2
Transmission slippage 
Detected 
Transmission is slipping excessively. Code will automatically 
clear once transmission stops slipping (repaired).
5,1
Internal Module 
Malfunction
Turn ignition off. Turn ignition back ON and re-check for 
presence of code. 
If problem persists, call Gale Banks Engineering Tech Support.










