SFI SYSTEM, Diagnostic DTC:P0261,P0262,P0264,P0265,P0267 and P0268

DTC Code DTC Name
P0261 Cylinder 1 Injector Circuit Low
P0262 Cylinder 1 Injector Circuit High
P0264 Cylinder 2 Injector Circuit Low
P0265 Cylinder 2 Injector Circuit High
P0267 Cylinder 3 Injector Circuit Low
P0268 Cylinder 3 Injector Circuit High

DESCRIPTION

The fuel injectors are installed in the intake manifold, and inject fuel into the cylinders based on the signals from the ECM.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

P0261

Cylinder 1 Injector Circuit Low

Open or short to GND in fuel injector circuit (3 trip detection logic).

  • Open or short to GND in fuel injector circuit

  • Fuel injector

  • ECM

Comes on

DTC stored

P0262

Cylinder 1 Injector Circuit High

Short in power source circuit (3 trip detection logic).

  • Short in fuel injector power source circuit

  • Fuel injector

  • ECM

Comes on

DTC stored

P0264

Cylinder 2 Injector Circuit Low

Open or short to GND in fuel injector circuit (3 trip detection logic).

  • Open or short to GND in fuel injector circuit

  • Fuel injector

  • ECM

Comes on

DTC stored

P0265

Cylinder 2 Injector Circuit High

Short in power source circuit (3 trip detection logic).

  • Short in fuel injector power source circuit

  • Fuel injector

  • ECM

Comes on

DTC stored

P0267

Cylinder 3 Injector Circuit Low

Open or short to GND in fuel injector circuit (3 trip detection logic).

  • Open or short to GND in fuel injector circuit

  • Fuel injector

  • ECM

Comes on

DTC stored

P0268

Cylinder 3 Injector Circuit High

Short in power source circuit (3 trip detection logic).

  • Short in fuel injector power source circuit

  • Fuel injector

  • ECM

Comes on

DTC stored
Tip:

  • If DTC P0261 or P0262 is displayed, check No. 1 fuel injector assembly circuit.

  • If DTC P0264 or P0265 is displayed, check No. 2 fuel injector assembly circuit.

  • If DTC P0267 or P0268 is displayed, check No. 3 fuel injector assembly circuit.

WIRING DIAGRAM

A325653E01

CONFIRMATION DRIVING PATTERN

These DTCs are detected when the engine idles for approximately 15 seconds.

CAUTION / NOTICE / HINT

Note:

After replacing the ECM, perform idle learning.

Click here

Tip:

Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (ECM - FUEL INJECTOR ASSEMBLY)

    1. Disconnect the ECM connector.

    2. Disconnect the fuel injector assembly connectors.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      B31-23 (#1) - B9-2

      Always

      Below 1 Ω

      B31-20 (#2) - B11-2

      Always

      Below 1 Ω

      B31-21 (#3) - B13-2

      Always

      Below 1 Ω

      B31-23 (#1) or B9-2 - Body ground

      Always

      10 kΩ or higher

      B31-20 (#2) or B11-2 - Body ground

      Always

      10 kΩ or higher

      B31-21 (#3) or B13-2 - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT FUEL INJECTOR ASSEMBLY

    1. Inspect the fuel injector assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE ECM

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    NG

    REPLACE FUEL INJECTOR ASSEMBLY

    Click here