Banks Power Dodge Trucks: (Diesel ’03 - 07 5.9L Cummins) Tuner- Bullet Diesel Tuner '03-07 235, 250, 305, 325 HP Dodge 5.9L Cummins (24-valve) Trucks User Manual

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96581 v.7.0

Section 4

TROUBLESHOOTING

The Bullet Diesel Tuner is equipped

with self-diagnosing features that

automatically check for proper sensor

and diesel tuner operation. Error codes

that your diesel tuner may display, either

upon startup or after accessing the

Diagnostics submenu, are listed below.
If the Bullet Diesel Tuner should ever

need to be removed from the vehicle,

the system includes a bypass plug

that must be connected to the six-pin

MAP/FRP harness in place of the diesel

tuner. Failure to utilize the bypass

plug when the Bullet diesel tuner has

been unplugged from the harness will

generate a check Engine light when

attempting to start the vehicle.

-EnD, SECTIon 4-

Table 2

Error Code

Code Description

Course of Action

BST ERR1

The Bullet diesel tuner
has detected a fault in
the Manifold Absolute
Pressure (MAP) input
circuit.

The listed error code(s) will occur when the
Bullet diesel tuner fails to receive any signal
from the associated sensor, or receives an input
signal from the sensor that is out of the normal
operating range.

Turn the vehicle and ignition completely off,
check the Bullet harness connections at the
sensor in question to ensure that they are fully
engaged. Also check the 2- and 6-pin connectors
at the back of the Bullet diesel tuner to ensure
that they are properly engaged. After checking
all connections, restart the vehicle – if the Bullet
diesel tuner continues to display the same error
message, please contact Banks Technical Service

FRP ERR2

The Bullet diesel tuner
has detected a fault in
the Fuel Rail Pressure
(FRP) input circuit.

EGT ERR3

The Bullet diesel tuner
has detected a fault
in the Exhaust Gas
Temperature (EGT)
input circuit.

BSTO ERR4

The Bullet diesel tuner
has detected a fault in
the Manifold Absolute
Pressure (MAP) output
circuit.

The listed output error(s) will be displayed when
the Bullet diesel tuner detects a problem with
the associated output signal.

Turn the vehicle and ignition completely off,
check the Bullet harness connections at the
sensor in question to ensure that they are fully
engaged. Also check the 6-pin connector at the
back of the Bullet diesel tuner to ensure that it is
properly engaged. After checking all connections,
restart the vehicle – if the Bullet diesel tuner
continues to display the same error message,
please contact Banks Technical Service.

FRPO ERR5

The Bullet diesel tuner
has detected a fault in
the Fuel Rail Pressure
(FRP) output circuit.

INT ERR6

The Bullet diesel tuner
has detected an internal
(diesel tuner) error.

Turn the vehicle completely off then restart it – if
the error is still present contact Banks Technical
Service.