Daewoo Bus BS Series Owner's Manual page 248

FAULTY DIAGNOSIS
Fault
LAMP
Code
The EGR differential pressure sensor has detected high EGR
gas flow or the EGR differential pressure reading is not valid
2359 Amber
for engine operating conditions
Low voltage detected at the engine brake solenoid number 2
2363 Amber
signal circuit
Low voltage detected at the engine brake solenoid number 2
2367 Amber
signal circuit
High signal voltage detected at the exhaust gas pressure
2373 Amber
circuit
2374 Amber Low signal voltage detected at the exhaust gas pressure circuit
High signal voltage detected at EGR temperature circuit
2375 Amber
Low signal voltage detected at EGR temperature circuit
2376 Amber
Open circuit or high voltage detected at the fan control circuit
2377 Amber
The smart VGT controller has detected incorrect stop limits,
2387 Amber
or the VGT is unable to move to the closed position
2412 Amber The fan speed signal has been lost
Mainte-
2448
Low engine coolant level detected
nance
The VGT has failed the automatic calibration procedure at
2449
Red
initial key-on. VGT will be in the open position
Turbocharger turbine inlet temperature has exceeded the
2451 None
engine protection limit
The exhaust gas pressure sensor is reading an erratic value
2554 None
at initial key-on
An internal error has been detected by the smart VGT controller
2634 Red
A calibration mismatch between the VGT actuator and the
2635 Red
ECM has been detected
REASON
7-58
EFFECT
EGR valve actuation will be disabled.
Engine brake on cylinders number 4, 5, and 6
can not be ctivated.
Engine brake on cylinders number 4, 5, and 6
can not be deactivated, or can be activated.
None on performance.
None on performance.
EGR valve actuation will be disabled.
EGR valve actuation will be disabled.
The fan may stay on continuously or not run at all.
VGT travel may be limited.
The fan will only be in the ON or OFF position.
None on performance.
Low intake manifold pressure.
Fuel is limited in an attempt to decrease the calculated
exhaust gas temperature entering the turbocharger.
The ECM will estimate the exhaust gas pressure.
VGT actuation will be disabled.
VGT actuation will be disabled.