kadett90 kirjoitti:Robertx kirjoitti:
Onko jälkimmäinen vikakoodi varmasti oikea ??
Kyllä tuosta Simtecistä tuo P0191:nkin löytyy.
Tiedän kyllä , että löytyy tuo vikakoodi P0191. Halusin vain varmistaa.
P0191 vikakoodiin löytyy vain hieman eri selityksiä:
Fehlercode P0191 - Kraftstoffdruckregler Spannung zu groß
Fehlercode P0191 - Kraftstoffdruckregler Spannung zu klein
Fehlercode P0191 - Kraftstoffdruckregler Stromkreis offen
P0191
Fuel Pressure Actuator High Voltage
Short to voltage in circuit to control unit terminal 15, 64 (XC54)
Effect:
Service Vehicle Soon Lamp ON
Engine telltale is switched on
Concerned Terminals:
ECM: 15, 64 (XC54)
P0191
Fuel Pressure Actuator Low Voltage
Short to ground in circuit to control unit terminal 15, 64 (XC54)
Above condition must be fulfilled for at least 0.8 s .
Effect:
Engine is stopped.
Service Vehicle Soon Lamp ON
Concerned Terminals:
ECM: 15, 64 (XC54)
P0191
Fuel Pressure Actuator Circuit Open
Interruption in circuit to control unit terminal 15, 64 (XC54)
Above conditions must be fulfilled for at least 0.8 s .
Effect:
Service Vehicle Soon Lamp ON
Engine telltale is switched on
Concerned Terminals:
ECM: 15, 64 (XC54)
Generic OBD Error Code Details for P0191
Fuel Rail Pressure Sensor Circuit Range/Performance
What does this mean?
OBD Code P0191refers to
The Fuel Rail Pressure (FRP) sensor is a diaphragm strain gauge device in which resistance changes with pressure. The electrical resistance of a strain gauge increases as pressure increases, and the resistance decreases as the pressure decreases. The varying resistance affects the voltage drop across the sensor terminals and provides electrical signal to the Powertrain Control Module (PCM) corresponding to pressure. Strain gauge type sensors are consider passive sensors. A passive sensor is connected to a voltage divider network so that varying the resistance of the passive sensor causes a variation in total current flow. Voltage that is dropped across a fixed resistor in series with the sensor resistor determines the voltage signal at the PCM. This voltage signal is equal to the reference voltage minus the voltage drop across the fixed resistor. The FRP sensor measures the pressure of the fuel near the fuel injectors. This signal is used by the PCM to adjust the fuel injector pulse width and meter fuel to each combustion cylinder.
Symptoms
Possible sumptoms of OBD code P0191
- Engine Light ON (or Service Engine Soon Warning Light) - Engine will not start
Causes
Possible causes of OBD code P0191
- High fuel pressure - Low fuel pressure - Damaged FRP sensor - Excessive resistance in the circuit - Low or no fuel - Wiring harness connector of the fuel pressure sensor - Fuel Rail Pressure Sensor - Fuel
Eli jotkut selitykset viittaavat paineensäätimeen ja toiset sitten paineanturiin.
Toki yhteinen nimittäjä on bensanpaine.
, mutta pian menee hermot. 
