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SAFARI STROME
SR
NO
DTC
DESCRIPTION RESOLVE
PRIORITY
EFFECT ON VEHCLE
CAUSES
CHECK POINTS
CORRECTIVE ACTION
CEL
MIL
STATUS
129
P1257
Rail pressure
control error -
IMV current trim
too high.
M
1. Engine vibration / abnormal noise
2. Cylinder balancing is disabled.
3. Reduced torque mode activated.
This DTC gets logged if the
Rail pressure trim is less
than the calibrated value.
1. Check for the presence of
fault codes P0251; P0192
and P0193.
2. Check the LP circuit.
3. Check the HP circuit.
4. Check the Injector.
5. Check the HP pump.
6. Check ECU.
1. Check adequate fuel is available in the tank.
2. Check there is no air entry in to the low pressure
fuel line.
3. Ensure fuel filter is not clogged.
4. Ensure there is no leakage in the high pressure
fuel line.
5. Check & ensure connector for proper fitment.
6. Check for the presence of fault codes P0251;
P0192 and P0193; P0194; if noticed follow the
check procedures for the fault codes P0251; P0192
and P0193; P0194.
7. Check the LP circuit; Refer LP circuit check and
rectification procedure.
8. Check the HP circuit; Refer HP circuit check and
rectification Procedure.
9. Check the Injectors; Follow Injector check and
rectification procedure.
10. Check the HP pump; Rectify/replace HP pump if
found faulty.
11. Check ECU; Replace ECU if problem still
persists.
12. After rectification ensure the following before
handing over to customer.
a) Rail pressure at ignition key on is < 10 bar.
b) By removing the rail pressure sensor connector
shows rail pressure value of 800 bar.
c) High pressure leak detection test can be carried
out.
d) Please drive the vehicle on road; check and
ensure rail pressure feed-back follows the demand
continuously.
Y
N