Infiniti OBD/OBD2 Codes

Table of Contents

NOTE: 96 & later are OBD2 systems and require a scanner. For an OBD2 code list, please see our Infiniti code list or the appropriate generic list.

Infiniti: Accessing Codes Without OBD II

On G20 models, the ECU is located behind the center console. On J30, M30 and Q45 models, the ECU is located behind the RH kick panel.

If a malfunction occurs within the ECU/fuel injection system, a diagnostic trouble code may be stored in the ECU and the ‘‘Check Engine’’ lamp will blink. There is also a lamp built into the ECU which will concurrently blink. To read Code output, proceed as follows:

  1. Turn ignition On, but do not start engine.
  2. Using a small screwdriver, turn diagnostic mode selector switch, located on side of ECU, fully clockwise.
  3. Wait two seconds, then rotate switch to full counterclockwise position.
  4. A malfunction code can be read as the long (0.6 second) blink, indicating the first digit of a two digit number and the short (0.3 second) blink, indicating the second digit.

Ensure that the diagnostic switch is to the full counterclockwise position whenever the vehicle is in use.

Inifini: Accessing Codes w/OBD II

  • On G20 and I30 models, connect a suitable Scan Tool to the DLC, located under instrument panel fuse box cover.
  • >On J30, Q45 and QX4 models, connect a suitable Scan Tool to the DLC, located under or on lower portion of instrument panel.

Infiniti: 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.

Infiniti: OBD1 Codes via Check Engine Lamp

11Crank Angle Sensor
12Mass Air Flow Sensor
13ECT Sensor
14Vehicle Speed Sensor
16TCS Signal
21Ignition Signal Circuit
25Idle Air Control Valve
22Fuel Pump Control
32EGR Function
33Heated Oxygen Sensor
34Knock Sensor
35EGR Temperature Sensor (RH)
41Intake Air Temperature Sensor
42Fuel Pump Sensor
43Throttle Position Sensor
45Injector Leak
46Secondary Throttle Sensor
51Injector Analysis
53EGR Temperature Sensor (LH)
54Signal Circuit From A/T Control Unit To ECM
65-71Single Cylinder Or Multiple Cylinder Misfire
72Three Way catalyst Function
76Fuel Injection System Function
77Rear Heated Oxygen Sensor
82Crankshaft Position Sensor
84A/T Diagnosis Communication Line
91Front Heated Oxygen Sensor Heater
103Park/Neutral Position Switch
105EGR & Canister Control Solenoid

Infiniti: Common OBD2 Codes

P0000No Self Diagnostic Failure Indicated
P0100MAF Sensor
P0105Absolute Pressure Sensor
P0110IAT Sensor
P0115ECT Sensor
P0120TP Sensor
P0125ECT Sensor
P0130Closed Loop, Bank 1 Or Front O2S, Bank 1
P0131Front O2 Sensor, Bank 1 Lean Shift Monitoring
P0132Front O2 Sensor, Bank 1 Rich Shift Monitoring
P0133Front O2 Sensor, Bank 1 Response Monitoring
P0134Front O2 Sensor, Bank 1 High Voltage
P0135Front HO2S Heater, Bank 1
P0136Rear O2S, Bank 1
P0137Rear O2S, Bank 1 Minimum Voltage Monitoring
P0138Rear O2S, Bank 1 Maximum Voltage Monitoring
P0139Rear O2S, Bank 1 Response Monitoring
P0140Rear O2S, Bank 1 High Voltage
P0141Rear H02S Heater, Bank 1
P0150Closed Loop, Bank 2 Or Front O2S, Bank 2
P0151Front O2 Sensor, Bank 2 Lean Shift Monitoring
P0152Front O2 Sensor, Bank 2 Rich Shift Monitoring
P0153Front O2 Sensor, Bank 2 Response Monitoring
P0154Front O2 Sensor, Bank 2 High Voltage
P0155Front HO2S Heater, Bank 2
P0156Rear H02S Sensor, LH Bank
P0157–P0160Rear O2S, Bank 2
P0161Rear H02S Heater, LH Bank Or Bank 2
P0171Fuel System Lean, Bank 1
P0172Fuel System Rich, Bank 1
P0174Fuel System Lean, Bank 2
P0175Fuel System Rich, Bank 2
P0180Tank Fuel Temp Sensor
P0300Random Misfire
P0301–P0308Misfire, Cylinder No. 1–8
P0325Knock Sensor, Bank 1
P0330Knock Sensor, Bank 2
P0335CKP Sensor (Pos)
P0400EGR System
P0402EGRC/BPT Valve
P0403EGR Volume Control Valve Circuit
P0420TW Catalyst System, Bank 1
P0430TW Catalyst System, Bank 2
P0440EVAP Small Leak
P0443Purge Control/V & S/V
P0446Vent Control Valve
P0450EVAP Pressure Sensor
P0500Vehicle Speed Sensor
P0505IACV/AAC Valve
P0510Closed TP Sensor
P0600A/T Comm Line
P0705PNP Or Inhibitor Switch
P0710ATF Temp Sensor
P0720VSS A/T
P0725Engine Speed Signal
P0731A/T 1ST Signal
P0732A/T 2ND Signal
P0733A/T 3RD Signal
P0734A/T 4TH Signal Or TCC
P0740TCC SV Solenoid
P0744A/T TCC Signal
P0745Line Pressure S/V
P0750Shift Solenoid/V A
P0755Shift Solenoid/V B
P1105MAP/BARO Switch SOL/V
P1110Intake Valve Timing Control, LH Bank
P1120TP Sensor 2
P1125Tandem TP Sensor
P1130Swirl Control Valve Control Solenoid Valve
P1135Intake Valve Timing Control, RH Bank 2
P1140Intake Valve Timing Control Position Sensor, LH Bank 1
P1145Intake Valve Timing Control Position Sensor, RH Bank 2
P1148Closed Loop, Bank 1
P1165Swirl Control Valve Control Vacuum Check Switch
P1168Closed Loop, Bank 2
P1210Traction Control Signal Circuit
P1320Ignition Signal, Primary
P1335CKP Sensor (Ref)
P1336CKP Sensor (POS) Cog
P1400EGRC Solenoid/V
P1401EGR Temp Sensor
P1402EGR System
P1440EVAP Small Leak
P1441VC/V Bypass/V
P1443Canister Control Vacuum Check Switch
P1444Purge Volume Control/V
P1445Purge Volume Control/V
P1446Vent Control Valve
P1447EVAP Purge Flow
P1448Vent Control Valve
P1490VC/V Bypass/V
P1491VC Cut/V Bypass/V
P1492Purge Control/V S/V
P1493Purge Control/V & S/V
P1605A/T Diag Comm Line
P1705TP Sensor A/T
P1706PNP Switch
P1760Overrun Clutch S/V
P1900Cooling Fan

Infiniti Codes by Model / Year

ModelYearEngine identificationSystem
FX35 3.5L2003-08VQ35DENissan ECCS
FX45 4.5L2003-08VK45DENissan ECCS
G20 2.0L1994-96SR20DENissan ECCS
G20 2.0L1999-02SR20DENissan ECCS
G35 3.5L2003-08VQ35DENQ35HRNissan ECCS
G37 3.7L2008VQ37VHRNissan ECCS
130 3.0L1996-99VQ30DENissan ECCS
130 3.0L2000-01VQ30DENissan ECCS
135 3.5L2002-04VQ35DENissan ECCS
J30 3.0L1996-98VG30DENissan ECCS
M35 3.5L2005-08VQ35DENissan ECCS
M45 4.5L2003-08VK45DENissan ECCS
Q45 4.1L1996-01VH41DENissan ECCS
Q45 4.5L1996-01VH45DENissan ECCS
Q45 4.5L2002-06VK45DENissan ECCS
QX4 3.3L1997-00VG33ENissan ECCS
QX4 3.5L2001VQ35DENissan ECCS
OX4 3.5L2002-03VQ35DENissan ECCS
OX56 5.6L2004-08VK56DENissan ECCS
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Dennis wales
5 years ago

Did not show p1217 manufacture code don’t know what this code is