SAFARI STORME

SAFARI STROME

DTC

DESCRIPTION RESOLVE

PRIORITY

EFFECT ON VEHCLE

CAUSES

CHECK POINTS

CORRECTIVE ACTION

CEL

MIL

STATUS

127

P1253

Rail pressure

control error-

Negative error.

1. Engine vibration / abnormal noise

2. Cylinder balancing is disabled.

3. Reduced torque mode activated.

This DTC gets logged if the

Rail pressure error is

bellow lower threshold.

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;

P0253; P0255; P0192 and P0193; P0194; if noticed

follow the rectification procedures (of these fault

codes) to correct them before proceeding further.

7. Check continuity between ECU to Rail pressure

sensor connector as per circuit schematics; replace/

rectify the harness if required.

8. Check the LP circuit; Refer LP circuit check and

rectification procedure.

9. Check the HP circuit; Refer HP circuit check and

rectification Procedure.

10. Check the Injectors; Follow Injector check and

rectification procedure.

11. Check the HP pump; Rectify/replace HP pump if

found faulty.

12. Check ECU; Replace ECU if problem still

persists.

13. 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.