Infiniti FX35 – FX45 – G35 – G37 – M35 – M45 – QX56 (2003 – 2008) OBD1 Codes

Model	Year	Engine identification	System
FX35 3.5L	2003-08	VQ35DE	ECCS
FX45 4.5L	2003-08	VK45DE	ECCS
G35 3.5L	2003-08	VQ35DE/VQ35HR	ECCS
G37 3.7L	2008	VQ37VHR	ECCS
M35 3.5L	2005-08	VQ35DE	ECCS
M45 4.5L	2003-08	VK45DE	ECCS
QX56 5.6L	2004-08	VK56DE	ECCS

General information

Engine control module (ECM) incorporates self-diagnosis function.
Malfunction indicator lamp (MIL) will illuminate if certain faults are recorded.
ECM operates in backup mode if sensors fail, to enable vehicle to be driven to workshop.
Trouble codes can be displayed by using a Scan Tool connected to the data link connector (DLC) 1, or by the malfunction indicator lamp (MIL).

NOTE: The use of a Scan Tool is essential to obtain full diagnostic information.

Accessing – Mode 1

Switch ignition ON.
Check MIL illuminates.
Start engine. Allow to idle.
If MIL extinguishes, no trouble codes have been recorded.
If MIL remains illuminated, access trouble codes.

Accessing – Mode 2

Ensure accelerator pedal is fully released.
Switch ignition ON. Do NOT start engine.
Wait 3 seconds.
Within 5 seconds, repeat the following 5 times:

o Fully depress accelerator pedal.
o Fully release accelerator pedal.

Wait 7 seconds.
Fully depress accelerator pedal.
After approximately 10 seconds MIL will start flashing.
Fully release accelerator pedal.
Self-diagnosis now in Mode 2.
Count flashes and compare with trouble code table.
Each trouble code consists of four groups of one or more flashes.
The first group of flashes indicate the ‘thousands’ of the trouble code [2] [A].
The second group of flashes indicate the ‘hundreds’ of the trouble code [2] [B).
The third group of flashes indicate the ‘tens’ of the trouble code [2] [C].
The fourth group of flashes indicate the ‘units’ of the trouble code [2] [D].
Ten flashes in a group indicate ‘0’.
A short pause separates each trouble code group [2] [E].
A long pause separates each trouble code [2] [F].
For example: Trouble code P1130 displayed [2].
Switch ignition OFF.
Self-diagnosis will return to Mode 1.

Erasing

Trouble codes can be erased by using a Scan Tool connected to the data link connector (DLC) or as follows:
Ensure accelerator pedal is fully released.
Switch ignition ON. Do NOT start engine.
Wait 3 seconds.
Within 5 seconds, repeat the following 5 times:

o Fully depress accelerator pedal.
o Fully release accelerator pedal.

Wait 7 seconds.
Fully depress accelerator pedal.
After approximately 10 seconds MIL will start flashing.
Fully release accelerator pedal.
Self-diagnosis now in Mode 2.
Fully depress accelerator pedal for more than 10 seconds.
Fully release accelerator pedal.

Trouble code identification

Flash code	OBD·II code	Fault location	Probable cause
–	PO, P2, uo	Refer to OBD-11 trouble code tables	–
0	–	No self-diagnostic failure indicated	–
1000	U1000	CAN communication line – signal malfunction	Wiring
1001	U1001	CAN communication line – signal malfunction	Wiring
1010	U1010	CAN communication line – initialization malfunction	Wiring, ECM
1031	P1031	Heated oxygen sensor (H02S), bank 1, heater – voltage low	Wiring, H02S
1032	P1032	Heated oxygen sensor (H02S), bank 1, heater – voltage high	Wiring, H02S
1051	P1051	Heated oxygen sensor (H02S), bank 2, heater – voltage low	Wiring, H02S
1052	P1052	Heated oxygen sensor (H02S), bank 2, heater – voltage high	Wiring, H02S
1065	P1065	Engine control module (ECM) – battery voltage supply	Wiring, fuse, ECM
1078	P1078	Camshaft position (CMP) sensor, exhaust – low voltage	Wiring, CMP
1084	P1084	Camshaft position (CMP) sensor, exhaust – high voltage	Wiring, CMP
1102	P1102	MAF sensor – performance problem	Wiring, MAF sensor
1111	P1111	Intake valve timing control solenoid, bank 1 – circuit malfunction	Wiring, intake valve control solenoid, ECM
1119	P1119	Engine coolant temperature (ECT) sensor – circuit malfunction	Wiring, engine coolant temperature (ECT) sensor
1121	P1121	Throttle motor – malfunction	Throttle motor, ECM
1122	P1122	Throttle motor – circuit malfunction	Wiring, throttle motor, ECM
1124	P1124	Throttle motor relay – short circuit	Wiring, throttle motor, throttle motor relay, ECM
1126	P1126	Throttle motor relay – open circuit	Wiring, throttle motor, throttle motor relay, ECM
1128	P1128	Throttle motor – short circuit	Wiring, throttle motor, ECM
1130	P1130	Intake manifold air control solenoid – malfunction	Wiring, intake manifold air control solenoid, ECM
1136	P1136	Intake valve timing control solenoid, bank 2 – circuit malfunction	Wiring, intake valve control solenoid, ECM
1140	P1140	Intake valve timing control position sensor, bank 1 – circuit malfunction	Wiring, intake valve control position sensor, crankshaft (CKP) sensor, camshaft position (CMP) sensor, mechanical fault, ECM
1143	P1143	Heated oxygen sensor (H02S) 1, bank 1 – voltage low	Wiring, mixture, H02S, ECM
1144	P1144	Heated oxygen sensor (H02S) 1, bank 1 – voltage high	H02S, fuel pressure, fuel system, ECM
1145	P1145	Intake valve timing control position sensor, bank 2 – circuit malfunction	Wiring, intake valve control position sensor, crankshaft (CKP) sensor, camshaft position (CMP) sensor, mechanical fault, ECM
1146	P1146	Heated oxygen sensor (H02S) 2, bank 1 – voltage low	Wiring, mixture, H02S, ECM
1147	P1147	Heated oxygen sensor (H02S) 2, bank 1 – voltage low	Wiring, H025, fuel pressure, fuel system, ECM
1148	P1148	Closed loop control, bank 1 – inoperative	Wiring, H025 front, ECM
1163	P1163	Heated oxygen sensor (H02S) 1, bank 2- _voltage low	Wiring, mixture, H02S, ECM
1164	P1164	Heated oxygen sensor (H02S) 1, bank 2 – voltage high	H025, fuel pressure, fuel system, ECM
1166	P1166	Heated oxygen sensor (H02S) 2, bank 2 – voltage low	Wiring, mixture, H02S, ECM
1167	P1167	Heated oxygen sensor (H02S) 2, bank 2 – voltage low	Wiring, H025, fuel pressure, fuel system, ECM
1168	P1168	Closed loop control, bank 2 – inoperative	Wiring, H02S front, ECM
1211	P1211	ABSITCS control module – malfunction	Wiring, ABSfTCS control module, ECM
1212	P1212	ABS/TCS control module – communication malfunction	Wiring, ABS/TCS control module, ECM
1217	P1217	Engine over temperature	Cooling system, engine coolant blower motor
1220	P1220	Fuel pump control module – circuit malfunction	Wiring, fuel pump speed resistor, fuel pump control module
1223	P1223	Throttle position (TP) sensor 2 – voltage low	Wiring, TP sensor, ECM
1224	P1224	Throttle position (TP) sensor 2 – voltage high	Wiring, TP sensor, ECM
1225	P1225	Throttle motor position sensor – learning problem, voltage low, bank 1	Wiring, TP sensor 1, TP sensor 2
1226	P1226	Throttle motor position sensor – learning problem, bank 1	Wiring, TP sensor 1, TP sensor 2
1227	P1227	Accelerator pedal position (APP) sensor 2 – voltage low	Wiring, APP sensor, ECM
1228	P1228	Accelerator pedal position (APP) sensor 2 – voltage high	Wiring, APP sensor, ECM
1229	P1229	Engine control module (ECM) – sensor supply voltage low/high	Wiring, APP sensor, throttle motor position sensor, MAF sensor, fuel tank pressure sensor, TP sensor(s), refrigerant pressure sensor
1233	P1233	Electronic throttle control – performance	Wiring, throttle control motor
1234	P1234	Throttle motor position sensor – learning problem, voltage low, bank 2	Wiring, TP simsor 1, TP sensor 2
1235	P1235	Throttle motor position sensor – learning problem, bank 2	Wiring, TP sensor 1, TP sensor 2
1236	P1236	Throttle control motor – short circuit	Wiring, throttle control motor
1238	P1238	Throttle control motor – malfunction	Throttle control motor
1239	P1239	Throttle position (TP) – performance	Wiring, throttle actuator, TP sensor
1271	P1271	Heated oxygen sensor (H02S), bank 1 – voltage low	Wiring, H02S
1272	P1272	Heated oxygen sensor (H02S), bank 1 – voltage high	Wiring, H02S
1273	P1273	Heated oxygen sensor (H02S), bank 1 – lean mixture	H02S, fuel pressure, injectors, intake air leak
1274	P1274	Heated oxygen sensor (H02S), bank 1 – rich mixture	H02S, fuel pressure, injectors
1276	P1276	Heated oxygen sensor (H02S), bank 1 – activity	Wiring, H025
1278	P1278	Heated oxygen sensor (H02S), bank 1 – slow response	Wiring, fuel pressure, injectors, MAF sensor, PCV, H02S, intake air leaks, exhaust leaks
1279	P1279	Heated oxygen sensor (H02S), bank 1 – slow response	Wiring, fuel pressure, injectors, MAF sensor, PCV, H025, intake air leaks, exhaust leaks
1281	P1281	Heated oxygen sensor (H02S), bank 2 – voltage low	Wiring, H025
1282	P1282	Heated oxygen sensor (H02S), bank 2 – voltage high	Wiring, H025
1283	P1283	Heated oxygen sensor (H02S), bank 2 – lean mixture	H02S, fuel pressure, injectors, intake air leak
1284	P1284	Heated oxygen sensor (H02S), bank 2 – rich mixture	H02S, fuel pressure, injectors
1286	P1286	Heated oxygen sensor (H02S), bank 2 – activity	Wiring, H02S
1288	P1288	Heated oxygen sensor (H02S), bank 2 – slow response	Wiring, fuel pressure, injectors, MAF sensor, PCV, H02S, intake air leaks, exhaust leaks
1289	P1289	Heated oxygen sensor (H02S), bank 2 – slow response	Wiring, fuel pressure, injectors, MAF sensor, PCV, H02S, intake air leaks, exhaust leaks
1290	P1290	Throttle control motor relay – voltage low	Wiring, relay
1402	P1402	Exhaust gas recirculation (EGR) system – excessive flow	Wiring, EGRIEVAP valve, EGR valve, EGRT sensor, EGR back pressure transducer, ECM
1421	P1421	Cold start emission control – malfunction	Intake/exhaust leak/blockage, mechanical fault, idle speed control (ISC) system, ignition control, engine coolant temperature (ECT) sensor, H025, ECM
1442	P1442	Evaporative emission (EVAP) canister purge system – small leak	EVAP canister purge system, hose leak, EVAP pressure sensor/vent valve, fuel filler cap, ECM
1444	P1444	Evaporative emission (EVAP) canister purge control system – malfunction	Wiring, EVAP valve, hoses, mechanical fault, ECM
1446	P1446	Evaporative emission (EVAP) canister purge control valve – malfunction	Wiring, EVAP valve, mechanical fault, ECM
1448	P1448	Evaporative emission (EVAP) canister purge control valve – malfunction	Wiring, EVAP valve, ECM
1456	P1456	Evaporative emission (EVAP) canister purge system – very small leak	EVAP canister purge system, hose leak, EVAP pressure sensor/vent valve, fuel filler cap, ECM
1464	P1464	Fuel gauge tank sensor- voltage high	Wiring, fuel gauge tank sensor, ECM
1480	P1480	Engine coolant blower motor control – circuit malfunction	Wiring, blower motor speed control solenoid valve, ECM
1490	P1490	·Evaporative emission (EVAP) canister purge control system – malfunction	Wiring, vacuum cut valve bypass valve, mechanical fault, ECM
1491	P1491	Evaporative emission (EVAP) canister purge control system – malfunction	Wiring, vacuum cut valve bypass valve, mechanical fault, ECM
1550	P1550	Battery condition sensor – malfunction	Wiring, battery condition sensor
1551	P1551	Battery condition sensor – low voltage	Wiring, battery condition sensor
1552	P1552	Battery condition sensor – high voltage	Wiring, battery condition sensor
1553	P1553	Battery condition sensor – signal too high	Wiring, battery condition sensor
1554	P1554	Battery condition sensor – signal too low	Wiring, battery condition sensor
1564	P1564	Cruise control master switch – circuit malfunction	Wiring, cruise control master switch, ECM
1568	P1568	Cruise control master switch – signal out of specification	Wiring, cruise control master switch, . ECM
1572	P1572	Cruise control brake pedal switch – circuit malfunction	Wiring, brake pedal position (BPP) switch, cruise control brake pedal switch, ECM
1574	P1574	Cruise control vehicle speed sensor – signal malfunction	Wiring, TCM – DTC’s stored, ABSfTCS control module – DTC’s stored, instrument panel, wheel speed sensor, ECM
1610	P1610	Ignition key/engine control module (ECM) – malfunction	Incorrect ignition key, ECM
1611	P1611	Immobilizer control module/engine control module (ECM) – coding	Immobilizer control module/ECM incorrectly coded
1612	P1612	Immobilizer control module/engine control module (ECM) communication – malfunction	Wiring, immobilizer control module, ECM
1613	P1613	Engine control module (ECM), immobilizer function – internal failure	ECM
1614	P1614	Immobilizer control module/module coding plug communication – no signal	Wiring, immobilizer control module, module coding plug
1615	P1615	Ignition key/immobilizer control module communication – malfunction	Incorrect ignition key, immobilizer control module
1700	P1700	CVT shift control – malfunction	TCM trouble code(s) stored
1705	P1705	AT- throttle position (TP) sensor- voltage high or low	Wiring, TP sensor, mechanical fault, ECM
1706	P1706	Park/neutral position (PNP) switch – circuit malfunction	Wiring, PNP switch, ECM
1715	P1715	Automatic transmission turbine shaft speed (TSS) sensor- circuit malfunction	Wiring, TSS sensor, TCM
1716	P1716	Automatic transmission turbine shaft speed {TSS) sensor- circuit malfunction	Wiring, TSS sensor 1, TSS sensor 2, ECM
1720	P1720	Vehicle speed sensor (VSS) – signal variation	Wiring, TCM – DTC’s stored, ABSfTCS control module – DTC’s stored, instrument panel
1730	P1730	Automatic transmission fail safe function – circuit malfunction	Wiring, transmission clutches, transmission solenoid valves, transmission pressure switches
1740	P1740	CVT lock-up select solenoid valve – malfunction	Wiring, lock-up select solenoid valve
1752	P1752	Automatic transmission input clutch – solenoid valve malfunction	Wiring, input clutch solenoid valve
1754	P1754	Automatic transmission input clutch – solenoid valve malfunction	Wiring, input clutch solenoid valve, transmission pressure switch 3
1757	P1757	Automatic transmission front brake – solenoid valve malfunction	Wiring, front brake solenoid valve
1759	P1759	Automatic transmission front brake – solenoid valve malfunction	Wiring, front brake solenoid valve, transmission pressure switch 1
1760	P1760	AT- overrun clutch solenoid- voltage low	Wiring, clutch solenoid, TCM
1762	P1762	Automatic transmission direct clutch – solenoid valve malfunction	Wiring, direct clutch solenoid valve
1764	P1764	Automatic transmission direct clutch – solenoid valve malfunction	Wiring, direct clutch solenoid valve, transmission pressure switch 5
1767	P1767	Automatic transmission high/low reverse – solenoid valve malfunction	Wiring, high/low reverse solenoid valve
1769	P1769	Automatic transmission high/low reverse – solenoid valve malfunction	Wiring, high/low reverse solenoid valve, transmission pressure switch 6
1772	P1772	Automatic transmission low coast brake – solenoid valve malfunction	Wiring, low coast brake solenoid valve
1774	P1774	Automatic transmission low coast brake – solenoid valve malfunction	Wiring, low coast brake solenoid valve, transmission pressure switch 2
1777	P1777	CVT step motor – circuit malfunction	Wiring, step motor
1778	P1778	CVT step motor – mechanical malfunction	Step motor
1780	P1780	Automatic transmission shift change – signal malfunction	Wiring, TCM, ECM
1800	P1800	Intake manifold air control solenoid – circuit malfunction	Wiring, intake manifold air control solenoid
1805	P1805	Brake pedal position (BPP) switch – circuit malfunction	Wiring, BPP switch