Dtc P0191 Fuel Rail Pressure Sensor Circuit Range / Performance


DESCRIPTION

INSPECTION PROCEDURE

CHECK OTHER DTC OUTPUT

DTC P0191 Fuel Rail Pressure Sensor Circuit Range / Performance


DESCRIPTION

Refer to DTC P0087 (Toyota Fortuner RM000001880053X.html).

DTC No.
DTC Detection Condition
Trouble Area
P0191
Voltage output of the fuel pressure sensor for the common rail is out of the standard range
(1 trip detection logic)
Fuel pressure sensor

INSPECTION PROCEDURE

NOTICE:
After replacing the ECM, the new ECM needs registration (Toyota Fortuner RM0000012XK04BX.html) and initialization (Toyota Fortuner RM000000TIN04NX.html).
HINT:
  1. If DTCs P0087, P0190, P0192, and P0193 are output simultaneously, the manifold absolute pressure sensor circuit may be open or short. Perform troubleshooting for those DTCs first.
  2. Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.
1.CHECK OTHER DTC OUTPUT

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch ON and turn the tester ON.

  1. Enter the following menus: Powertrain / Engine and ECT / DTC.

  1. Read the DTCs.

    Result:

    Display (DTC output)
    		Proceed to
    P0191
    		A
    P0191 and other DTCs
    		B
    HINT:
    If codes other than P0191 are output, perform troubleshooting for those DTCs first.


B
GO TO DTC CHART (Toyota Fortuner RM000002YV7016X.html)
A

REPLACE COMMON RAIL ASSEMBLY (FUEL PRESSURE SENSOR) (Toyota Fortuner RM000002SY501VX.html)