SPN
Code
FMI
Code
Fault Check Description
Fault Detection Condition
Possible
Causes
23613
0
Maximum Positive Deviation of Rail
Pressure Exceeded
If the rail pressure governor deviation Rail_pDvt exceeds the limiting
value based on the engine speed Rail_pMeUnDvtMax_CUR an error will
be detected.
1. Leakage in the
high pressure
section
2. Injection nozzle
stuck in open
position
3. Worn high pres-
sure pump
4. Worn injector
(to high injector
back flow
quantity)
5.
Fuel filter
clogged up
6. PSP (electric
pre-supply
pump) output
too low
1
If the rail pressure governor deviation
Rail_pDvt falls below the limiting value
Rail_pMeUnDvtMin_CUR and if the CP3
delivery quantity MeUn_dvolSet falls to
the threshold Rail_MeUnMon.dvolSet-
Min_C (-350 mm^3/s) an error will be
detected.
If the rail pressure governor deviation Rail_pDvt falls below the limiting
value Rail_pMeUnDvtMin_CUR and if the CP3 delivery quantity MeUn_
dvolSet falls to the threshold Rail_MeUnMon.dvolSetMin_C an error will
be detected.
1. Metering unit is
stuck in open
position
2. Zero delivery
throttle clogged
up
3. Metering unit
without power
due to electrical
error.
4. Pressure after
zero-delivery
throttle too high.
2
If the rail pressure RailP_pFlt exceeds
the limiting value Rail_MeUnMon.
pFltMax_C (1.750.000 hPa) an error will
be detected.
If the rail pressure RailP_pFlt exceeds the limiting value Rail_MeUnMon.
pFltMax_C an error will be detected.
1. Metering unit is
stuck in open
position
2. Zero delivery
throttle clogged
up
3. Metering unit
without power
due to electrical
error.
4. Pressure after
zero-delivery
throttle too high.
24
Leakage is detected based on fuel
quantity balance
If the high pressure pump delivery quantity ( MeUn_dvolSet) exceeds the
plausibility limit of the volume flow balance (evaluated over the product
life and supplemented to include tolerances) Rail_dvolMonMax_mp, an
error will be detected.
Maladjusted rail
pressure sensor,
defective high
pressure pump,
leakage,
Possible error in
the low pressure
stage, Back flow
too low
Fault Codes
SECTION 3
SERVICE
069971
Page 52