P0253
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE.
Loss of performance.
Fuel pressure valves. Short to Ground/Open.
Fault symptoms
On-Board Diagnostics
Type of diagnosis:
Enable criteria:
|
-
|
Start of engine/engine running.
|
|
-
|
Fuel pressure valves active.
|
|
-
|
Battery voltage should be 10.2-15.8 V.
|
Fault criteria:
|
-
|
Diagnostics have detected that the electrical circuit to the fuel pressure valves is shorted to ground or there is a break for more than 2.1s.
|
Dependents:
System reaction to a fault:
|
-
|
The following limitations apply: Pedal position sensor adjustable to max 30%, fuel quantity max 20 mm
3
/combustion, fuel rail pressure max 60 MPa.
|
OK report:
|
-
|
Fault criteria not fulfilled.
|
Fault handling:
(See section
Fault handling III, other emissions-related components and functions
for more information)
Diagnostic help
Fault diagnosis concerns an electrical fault in the connecting leads or in the valve.
Functions in the diagnostic tool related to the fault:
|
-
|
Activate:
Fuel Pressure Solenoid 1,
Fuel Pressure Solenoid 2
|
See also the description of activations under
"Activate" menu
for more information.
Checking the wiring
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.
