Nissan Rogue (T33) 2021-Present Service Manual: P0203 Fuel Injector

Nissan Rogue (T33) 2021-Present Service Manual / Engine :: Engine Control System / Kr15ddt :: Dtc/circuit Diagnosis / P0203 Fuel Injector

DTC Description

DTC DETECTION LOGIC

DTC

CONSULT screen terms

(Trouble diagnosis content) 		DTC detection condition
P0203 00 INJECTOR CIRC-CYL3 Diagnosis condition Engine running at idle
Signal (terminal) No. 3 fuel injector signal
Threshold ECM detects No. 3 injector circuit is open or shorted
Diagnosis delay time —

POSSIBLE CAUSE

  • Harness or connectors (The fuel injector circuit is open or shorted.)

  • Fuel injector

  • ECM

FAIL-SAFE

Engine Control System

Fail safe mode Nissan Ariya Vehicle behavior
Traveling control mode Accelerator angle variation control

ECM controls the accelerator pedal depression speed to make it slower than actual speed. This causes a drop in accelerating performance and encourages the driver to repair malfunction.

NOTE:

ECM does not control the accelerator pedal releasing speed.
Device fix mode

  • This mode fixes the electric IVT control actuator and the EVT control solenoid valve in the reference position.

  • A control signals is not transmitted to the EGR volume control valve and the EGR volume control is deactivated.
Combustion control mode Stratified charge combustion control at starting No stratified charge combustion at starting (cold start).

Stop/Start System

Not applicable

DTC Confirmation Procedure

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

TESTING CONDITION:

Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.

>>

GO TO 2.

PERFORM DTC CONFIRMATION PROCEDURE

  1. Turn ignition switch OFF and wait at least 10 seconds.

  2. Start the engine and let it idle for at least 30 seconds.

  3. Check 1st trip DTC.

Is 1st trip DTC detected?

YES>>

Proceed to DTC Diagnosis Procedure.

NO-1>>

To check malfunction symptom before repair: Refer to Intermittent Incident.

NO-2>>

Confirmation after repair: INSPECTION END

DTC Diagnosis Procedure

CHECK FUEL INJECTOR

Refer to Component Function Check.

Is inspection result normal?

YES>>

INSPECTION END

NO>>

Repair or replace malfunctioning part.

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