Nissan Sentra B18 (2020-2025) Service Manual: P0262 Fuel Injector (cylinder 1)
Dtc Description
DTC Description
DTC DETECTION LOGIC
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0262 |
CYL1 INJECTOR (Cylinder 1 Injector A Circuit High) |
Diagnosis condition |
— |
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Signal (terminal) |
— |
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Threshold |
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Diagnosis delay time |
— |
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POSSIBLE CAUSE
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Harness or connectors
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Direct fuel injector circuit is shorted
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Battery power supply
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ECM (direct injector driver unit)
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direct fuel injector
FAIL-SAFE
Engine Control System
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Engine operating condition in fail-safe mode |
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Fail safe mode |
Nissan Sentra Vehicle behavior |
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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. |
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Device fix mode |
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Combustion control mode |
Stratified charge combustion control at starting |
No stratified charge combustion at starting (cold start). |
Idle Start/Stop System
When a DTC is detected, the start/stop indicator lamp blinks slowly and the idle start/stop system operation is prohibited.
When ECM detects error while operating the idle start/stop system, ECM restarts the engine.
Confirmation Procedure
Confirmation Procedure
DTC CONFIRMATION PROCEDURE
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PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.
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Turn ignition switch OFF and wait at least 10 seconds.
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Turn ignition switch ON.
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Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
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Before performing the following procedure, confirm that battery voltage is between 12 - 15 V at idle.
GO TO 2.
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PERFORM DTC CONFIRMATION PROCEDURE
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Start engine and let it idle for at least 20 seconds.
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Check 1st trip DTC.
Is 1st trip DTC detected?
YES >>Refer to DTC Diagnosis Procedure.
NO-1 >>To check malfunction symptom before repair: Refer to Intermittent Incident.
NO-2 >>Confirmation after repair: INSPECTION END
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Dtc Diagnosis Procedure
DTC Diagnosis Procedure
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CHECK DIRECT FUEL INJECTOR
Check direct fuel injector. Refer to Component Function Check.
Is inspection result normal?
YES >>GO TO 2.
NO >>Repair or replace error-detected parts.
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PERFORM DTC CONFIRMATION PROCEDURE
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Turn ignition switch ON.
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Erase DTC.
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Perform DTC confirmation procedure again. Refer to Confirmation Procedure.
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Check 1st trip DTC.
Is the DTC P0262 displayed again?
YES >>Replace ECM. Refer to ECM : Removal & Installation.
NO >>INSPECTION END
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Other materials:
P1217 Engine Over Temperature
Dtc Description
DTC Description
ECM controls cooling fan to the maximum speed when receives the
signal abnormality of each sensor, CAN and IPDM E/R, and severed wire short
circuit abnormality.
If the cooling fan or another component in the cooling system
malfunctions, engine coola ...
B Terminal Circuit. Diagnosis Procedure
Diagnosis Procedure
Diagnosis Procedure
“B” terminal circuit supplies power to charge the
battery and to operate the vehicles electrical system.
CHECK “B” TERMINAL CONNECTION
Ignition switch OFF.
...
C1711-7b Low Tire Pressure Fl
Dtc Description
DTC Description
Note:
The Signal Tech II Tool [– (NI-50190)] can be used
to perform the following functions: Refer to the Signal Tech II User
Guide for additional information.
Activate and display TPMS sensor IDs
Display tire pressure rep ...