1. DTC P0092 description
The FRP regulator is installed on the fuel supply pump and controls the fuel amount sucked into the fuel rail. The FRP regulator is fully opened in the normal state and larger drive current results in a smaller opening of the FRP regulator. The ECM calculates the desired fuel rail pressure and fuel flow rate, and compares the calculated fuel rail pressure to the actual pressure value in order to determine the opening position of the FRP regulator. If the actual fuel rail pressure is higher than the desired pressure, the FRP regulator closes to decrease the fuel flow rate. If the ECM detects an excessively high feedback current of the FRP regulator, the DTC is set.
2. Condition for setting DTC P0092
Condition for running the DTC
- The battery voltage is 9 to 16 V.
- The ignition voltage is 9 to 16 V.
- The ignition switch is ON.
- DTC P060B is not set.
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P060B (Flash Code 36) Internal Control Module A/D Processing Performance".
Condition for setting the DTC
Any of the following are met:
- The ECM detects that the FRP regulator feedback current is 2,400 mA or more for 1.6 seconds or more.
- The ECM detects that the FRP regulator feedback current is more than the desired current by 1,000 mA or more for 1.6 seconds or more.
3. Action taken when DTC P0092 sets
- Euro4: The ECM illuminates the MIL. Refer to Action taken when DTC sets - Type A (Euro4).
- Except Euro4: The ECM illuminates the check engine warning light. Refer to Action taken when DTC sets - Type A (Except Euro4).
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".
- The ECM limits the fuel injection quantity.
- The ECM inhibits pre-injection.
- The ECM inhibits the turbocharger control.
- The ECM limits the fuel rail pressure.
- The ECM inhibits the cruise control.
4. Condition for clearing DTC P0092
- Euro4: Refer to Condition for clearing the MIL/DTC - Type A or Type B (Euro4).
- Except Euro4: Refer to Condition for clearing the check engine warning light/DTC - Type A or Type B (Except Euro4).
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".