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Forums Knowledgebase Service Bulletins QX4 2001 QX4
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2001 QX4
2001 Infiniti QX4 Service Bulletins
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Access denied ITB09-012a
-REVISED-
1998-LATER ALL INFINITI MODELS; EVAP LEAK DTC DIAGNOSIS
Evap system leak detection diagnosis.
DTCs: P0440, P0442, P0455, P0456, P1440, and P1456

Discussion Thread
 
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03-05-2010
192.05 Kbytes Hits 680
Keywords: small p1440 p0455 p0440 leak p1456 p0456 p0442 mil dtc
Access denied ITB06-023a
-REVISED-
1997-2008 ALL INFINITI; DTC FOR VARIABLE VALVE TIMING CONTROL FUNCTION
The MIL is on with any of the following DTCs stored: P0011, P0014, P0021, P0024, P1110, P1135.
NOTE: The engine may also have Camshaft Sprocket rattle noise and/or other engine noise.
 
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01-25-2008
54.83 Kbytes Hits 902
Keywords: p1135 p0024 p0014 mil p1110 p0021 p0011 dtc
Access denied ITB02-050a
-REVISED-
2001 INFINITI QX4 MIL ‘ON’ WITH DTC P0420/P0430 BANK-1/BANK-2 CATALYST
If an applied 2001 QX4 has a MIL "ON" and either or both of the following DTCs stored in the ECM:
• P0420
• P0430
 
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01-23-2003
127.22 Kbytes Hits 91
Keywords: dtc mil p0420 p0430 catalyst
Access denied ITB02-015
1998-2002 ALL INFINITI MODELS; DTC 1491 (VACUUM CUT VALVE BYPASS VALVE)
DIAGNOSIS
This bulletin is an aid to the diagnostic procedures in the Service Manual for DTC P1491.
 
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03-22-2002
117.63 Kbytes Hits 187
Keywords: dtc mil p1491
Access denied ITB02-002
2001 INFINITI QX4; MIL ‘ON’ WITH REAR OXYGEN SENSOR DTC
PO138-P0140 OR P0158-P0160 STORED
If an applied vehicle has a MIL ‘ON’ with one of the following DTCs stored:
• P0138
• P0139
• P0140
• P0158
• P0159
• P0160
The cause may be a broken or cracked rear oxygen sensor element.
 
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01-16-2002
89.96 Kbytes Hits 52
Keywords: dtc mil p0139 p0140 p0158 p0159 p0160 po138
Access denied ITB00-045b
-REVISED-
2001 QX4; MIL "ON" DTC P1441 (EVAP VERY SMALL LEAK) STORED IN SELF DIAGNOSIS RESULTS
If an applied vehicle has a MIL "ON" with DTC P1441 (EVAP Very Small Leak) stored in Engine Self Diagnosis results, the cause may be the ECM program.
 
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01-06-2001
91.79 Kbytes Hits 9
Keywords: dtc evap mil p1441
Access denied ITB00-046
1996 AND UP ALL INFINITI MODELS; EVAP VENT CONTROL VALVE DIAGNOSTICS
If an applied vehicle has one (or more) of the following DTCs stored in Self Diagnosis, use the Service Procedure below to check the operation of the EVAP vent control valve.
 
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07-18-2000
102.17 Kbytes Hits 171
Keywords: valve vent mil evap dtc
Access denied ITB00-030
2000 INFINITI I30, G20, 2001 QX4;
DTC P0505 DUE TO INCORRECT IDLE SPEED
If one of the Applied Vehicles above has a Diagnostic Trouble Code (DTC) P0505 AAC/V stored, with no
customer driveability incident, it may be caused by an elevated or incorrect engine idle speed setting.
 
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05-02-2000
95.54 Kbytes Hits 63
Keywords: dtc idle mil p0505
 


 
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