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    Infiniti: ECU Codes and How To Check Them


    Number of posts : 299
    Points : 4098
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    Registration date : 2009-03-03

    Infiniti: ECU Codes and How To Check Them

    Post  jesse on Tue Mar 17, 2009 7:54 am

    w/OBD II

    On Infiniti's built after 96, connect a suitable Scan Tool to the DLC, located under the instrument panel fuse box cover (driver's left knee).

    Clearing Codes

    If using a scan tool, follow tool manufacturer’s instructions to clear Codes.

    A second, though more time consuming method of clearing codes involves using a small screwdriver to turn the diagnostic mode selector switch, located on the side of the ECM/ECU, fully clockwise. After waiting two seconds, rotate the switch to the full counterclockwise position. The diagnosis will end and memory will then be cleared.

    List of Codes


    11 Crank Angle Sensor

    12 Mass Air Flow Sensor

    13 ECT Sensor

    14 Vehicle Speed Sensor

    16 TCS Signal

    21 Ignition Signal Circuit

    25 Idle Air Control Valve

    22 Fuel Pump Control

    31 ECM

    32 EGR Function

    33 Heated Oxygen Sensor

    34 Knock Sensor

    35 EGR Temperature Sensor (RH)

    41 Intake Air Temperature Sensor

    42 Fuel Pump Sensor

    43 Throttle Position Sensor

    45 Injector Leak

    46 Secondary Throttle Sensor

    51 Injector Analysis

    53 Exhaust Gas Sensor (LH)

    54 Signal Circuit From A/T Control Unit To ECM

    55 System OK (1990-1995 Q45 only)

    65-71 Single Cylinder Or Multiple Cylinder Misfire

    72 Three Way catalyst Function

    76 Fuel Injection System Function

    77 Rear Heated Oxygen Sensor

    82 Crankshaft Position Sensor

    84 A/T Diagnosis Communication Line

    91 Front Heated Oxygen Sensor Heater

    103 Park/Neutral Position Switch

    105 EGR & Canister Control Solenoid

    OBD2 Codes

    P0000 No Self Diagnostic Failure Indicated

    P0100 MAF Sensor

    P0105 Absolute Pressure Sensor

    P0110 IAT Sensor

    P0115 ECT Sensor

    P0120 TP Sensor

    P0125 ECT Sensor

    P0130 Closed Loop, Bank 1 Or Front O2S, Bank 1

    P0131 Front O2 Sensor, Bank 1 Lean Shift Monitoring

    P0132 Front O2 Sensor, Bank 1 Rich Shift Monitoring

    P0133 Front O2 Sensor, Bank 1 Response Monitoring

    P0134 Front O2 Sensor, Bank 1 High Voltage

    P0135 Front HO2S Heater, Bank 1

    P0136 Rear O2S, Bank 1

    P0137 Rear O2S, Bank 1 Minimum Voltage Monitoring

    P0138 Rear O2S, Bank 1 Maximum Voltage Monitoring

    P0139 Rear O2S, Bank 1 Response Monitoring

    P0140 Rear O2S, Bank 1 High Voltage

    P0141 Rear H02S Heater, Bank 1

    P0150 Closed Loop, Bank 2 Or Front O2S, Bank 2

    P0151 Front O2 Sensor, Bank 2 Lean Shift Monitoring

    P0152 Front O2 Sensor, Bank 2 Rich Shift Monitoring

    P0153 Front O2 Sensor, Bank 2 Response Monitoring

    P0154 Front O2 Sensor, Bank 2 High Voltage

    P0155 Front HO2S Heater, Bank 2

    P0156 Rear H02S Sensor, LH Bank

    P0157–P0160 Rear O2S, Bank 2

    P0161 Rear H02S Heater, LH Bank Or Bank 2

    P0171 Fuel System Lean, Bank 1

    P0172 Fuel System Rich, Bank 1

    P0174 Fuel System Lean, Bank 2

    P0175 Fuel System Rich, Bank 2

    P0180 Tank Fuel Temp Sensor

    P0300 Random Misfire

    P0301–P0308 Misfire, Cylinder No. 1–8

    P0325 Knock Sensor, Bank 1

    P0330 Knock Sensor, Bank 2

    P0335 CKP Sensor (Pos)

    P0340 CMP

    P0400 EGR System

    P0402 EGRC/BPT Valve

    P0403 EGR Volume Control Valve Circuit

    P0420 TW Catalyst System, Bank 1

    P0430 TW Catalyst System, Bank 2

    P0440 EVAP Small Leak

    P0443 Purge Control/V & S/V

    P0446 Vent Control Valve

    P0450 EVAP Pressure Sensor

    P0500 Vehicle Speed Sensor

    P0505 IACV/AAC Valve

    P0510 Closed TP Sensor

    P0600 A/T Comm Line

    P0605 ECM/ECU

    P0705 PNP Or Inhibitor Switch

    P0710 ATF Temp Sensor

    P0720 VSS A/T

    P0725 Engine Speed Signal

    P0731 A/T 1ST Signal

    P0732 A/T 2ND Signal

    P0733 A/T 3RD Signal

    P0734 A/T 4TH Signal Or TCC

    P0740 TCC SV Solenoid

    P0744 A/T TCC Signal

    P0745 Line Pressure S/V

    P0750 Shift Solenoid/V A

    P0755 Shift Solenoid/V B

    P1105 MAP/BARO Switch SOL/V

    P1110 Intake Valve Timing Control, LH Bank

    P1120 TP Sensor 2

    P1125 Tandem TP Sensor

    P1130 Swirl Control Valve Control Solenoid Valve

    P1135 Intake Valve Timing Control, LH Bank 2

    P1140 Intake Valve Timing Control Position Sensor, RH Bank 1

    P1145 Intake Valve Timing Control Position Sensor, LH Bank 2

    P1148 Closed Loop, Bank 1

    P1165 Swirl Control Valve Control Vacuum Check Switch

    P1168 Closed Loop, Bank 2

    P1210 Traction Control Signal Circuit

    P1220 FPCM

    P1320 Ignition Signal, Primary

    P1335 CKP Sensor (Ref)

    P1336 CKP Sensor (POS) Cog

    P1400 EGRC Solenoid/V

    P1401 EGR Temp Sensor

    P1402 EGR System

    P1440 EVAP Small Leak

    P1441 VC/V Bypass/V

    P1443 Canister Control Vacuum Check Switch

    P1444 Purge Volume Control/V

    P1445 Purge Volume Control/V

    P1446 Vent Control Valve

    P1447 EVAP Purge Flow

    P1448 Vent Control Valve

    P1490 VC/V Bypass/V

    P1491 VC Cut/V Bypass/V

    P1492 Purge Control/V S/V

    P1493 Purge Control/V & S/V

    P1605 A/T Diag Comm Line

    P1705 TP Sensor A/T

    P1706 PNP Switch

    P1760 Overrun Clutch S/V

    P1900 Cooling Fan

      Current date/time is Wed Jul 18, 2018 5:59 am