Infiniti Car 1998-05

3.5L V6 - Auto 3

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Trouble Code: P0650



Malfunction Indicator Lamp Circuit Malfunction:

Possible Causes:



MIL control circuit is open (high voltage condition)
 
MIL control circuit is shorted to ground (high voltage condition)
 
PCM is damaged or has failed.
 

Trouble Code: P0705



Park Neutral Position Switch Circuit Malfunction:

Possible Causes:



P/N switch connector is damaged or loose
 
P/N switch signal circuit is open or shorted to ground
 
P/N switch signal circuit is shorted to VREF or system power
 
P/N switch is damaged or has failed
 
PCM has failed
 

Trouble Code: P0710



Transmission Fluid Temperature Sensor Circuit Malfunction:

Possible Causes:



TFT sensor signal circuit is open or shorted to ground
 
TFT sensor signal circuit is shorted to VREF or system power
 
TFT sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0720



TCM Revolution Sensor Circuit Malfunction:

Possible Causes:



Revolution sensor connector is damage, open or shorted
 
Revolution sensor signal circuit is open or shorted to ground
 
Revolution sensor signal circuit shorted to VREF or power (B+)
 
Revolution sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0725



TCM Engine Speed Signal Circuit Malfunction:

Possible Causes:



Engine speed signal is open or shorted to ground
 
Engine speed sensor signal shorted to VREF or power (B+)
 
Engine speed sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0731



A/T First Gear Circuit Malfunction:

Possible Causes:



Shift Solenoid 'A' is stuck in open position
 
Shift Solenoid 'B' is stuck in open position
 

Trouble Code: P0732



A/T Second Gear Circuit Malfunction:

Possible Causes:



Control valve sticking or binding
 
Solenoid valve is damaged or not operating
 

Trouble Code: P0733



A/T Third Gear Circuit Malfunction:

Possible Causes:



Control valve sticking, solenoid valve damaged or not operating
 
Servo piston or brake band is damaged or is not operating
 

Trouble Code: P0734



A/T Fourth Gear Circuit Malfunction:

Possible Causes:



Oil pump is damaged, or the TCC is not operating
 
Shift Solenoid 'B' may be stuck closed
 

Trouble Code: P0740



A/T TCC Solenoid Circuit Malfunction:

Possible Causes:



TCC solenoid connector is damaged, open or shorted
 
TCC solenoid control circuit open or shorted to ground
 
TCC solenoid control circuit shorted to system power (B+)
 
TCC solenoid is damaged or has failed
 

Trouble Code: P0744



A/T Servo Valve Solenoid Circuit Malfunction:

Possible Causes:



Servo valve solenoid connector is damaged, open or shorted
 
Servo valve solenoid control circuit open or shorted to ground
 
Servo valve solenoid control circuit shorted to system power
 
Servo valve solenoid is damaged or has failed
 
TSB 03-034 (5/03) contains information related to this code
 

Trouble Code: P0745



A/T Low Pressure Solenoid Circuit Malfunction:

Possible Causes:



Low pressure solenoid connector is damaged, open or shorted
 
Low pressure solenoid control circuit open or shorted to ground
 
Low pressure solenoid control circuit shorted to system power
 
Low pressure solenoid is damaged or has failed
 
TSB 03-034 (5/03) contains information related to this code
 

Trouble Code: P0750



A/T Shift Solenoid 'A' Circuit Malfunction:

Possible Causes:



Shift Solenoid -A- connector is damaged, open or shorted
 
Shift Solenoid 'A' control circuit open or shorted to ground
 
Shift Solenoid 'A' control circuit shorted to VREF or power (B+)
 
Shift Solenoid 'A' is damaged or has failed
 
PCM or TCM has failed
 

Trouble Code: P0755



A/T Shift Solenoid 'B' Circuit Malfunction:

Possible Causes:



Shift Solenoid -B- connector is damaged, open or shorted
 
Shift Solenoid 'B' control circuit open or shorted to ground
 
Shift Solenoid 'B' control circuit shorted to VREF or power (B+)
 
Shift Solenoid 'B' is damaged or has failed
 
PCM or TCM has failed
 

Trouble Code: P1065



PCM Backup Circuit Malfunction:

Possible Causes:



PCM Backup circuit (to battery) is open or shorted to ground
 
Clear the codes and retest for DTC P1065. If the same code resets, substitute a known good PCM and retest. If the code does not reset, the original PCM has failed
 

Trouble Code: P1102



Mass Airflow Sensor Range/Performance:

Possible Causes:



MAF sensor connector is damaged (it may be shorted)
 
MAF sensor signal circuit is shorted
 
MAF sensor is damaged or has failed
 
PCM is damaged or has failed
 

Trouble Code: P1111



Intake Valve Timing Control Circuit Malfunction (Bank 1):

Possible Causes:



Intake valve timing control solenoid circuit is open
 
Intake valve timing position control solenoid damaged or failed
 
PCM has failed
 

Trouble Code: P1121



Electronic Throttle Control Actuator Malfunction:

Possible Causes:



Electronic throttle control actuator is damaged or has failed
 
Throttle return spring is damaged or has failed
 

Trouble Code: P1122



Electronic Throttle Control Actuator Malfunction:

Possible Causes:



Electronic throttle control actuator connector is damaged/loose
 
Electronic throttle control actuator circuit is open or shorted
 
Electronic throttle control actuator is damaged or has failed
 

Trouble Code: P1124



Electronic Throttle Control Actuator Relay High Input:

Possible Causes:



ETC Actuator relay is damaged or failed (stuck in "on" position)
 
ETC Actuator relay control circuit is shorted to ground
 
ETC Actuator is damaged or has failed
 

Trouble Code: P1126



Electronic Throttle Control Actuator Relay Low Input:

Possible Causes:



ETC Actuator relay is damaged or failed (stuck in "off" position)
 
ETC Actuator relay control circuit is open
 
ETC Actuator is damaged or has failed
 

Trouble Code: P1128



Electronic Throttle Control Actuator Motor Circuit Malfunction:

Possible Causes:



ETC Actuator motor is damaged or has failed
 
ETC Actuator motor circuits are shorted to ground (low voltage)
 

Trouble Code: P1130



Swirl Control Solenoid Valve Performance:

Possible Causes:



Swirl Control valve control circuit is open or shorted to ground
 
Swirl Control valve is damaged or has failed
 
Swirl Control valve vacuum hoses are loose, restricted or dirty
 

Trouble Code: P1136



Intake Valve Timing Control Circuit Malfunction (Bank 2):

Possible Causes:



Intake valve timing control solenoid circuit is open or shorted
 
Intake valve timing position control solenoid is damaged/failed
 
PCM has failed
 

Trouble Code: P1143



HO2S-11 (Bank 1 Sensor 1) Lean Shift Monitoring (Bank 1):

Possible Causes:



Air leaks in the intake manifold, throttle body or PCV system
 
Fuel pressure is excessively low (lean air fuel)
 
Fuel injectors restricted (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1144



HO2S-11 (Bank 1 Sensor 1) Rich Shift Monitoring (Bank 1):

Possible Causes:



Fuel pressure is excessively high (rich air fuel)
 
Fuel injectors sticking open (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1146



HO2S-12 (Bank 1 Sensor 2) Lean Shift Monitoring (Bank 1):

Possible Causes:



Air leaks in the intake manifold, throttle body or PCV system
 
Fuel pressure is excessively low (lean air fuel)
 
Fuel injectors restricted (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1147



HO2S-12 (Bank 1 Sensor 2) Rich Shift Monitoring (Bank 1):

Possible Causes:



Fuel pressure is excessively high (rich air fuel)
 
Fuel injectors sticking open (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1148



Closed Loop Malfunction Detected (Bank 1):

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S is damaged, contaminated or has failed
 
HO2S heater is damaged or has failed
 

Trouble Code: P1163



HO2S-12 (Bank 1 Sensor 2) Lean Shift Monitoring (Bank 2):

Possible Causes:



Air leaks in the intake manifold, throttle body or PCV system
 
Fuel pressure is excessively low (lean air fuel)
 
Fuel injectors restricted (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1164



HO2S-12 (Bank 1 Sensor 2) Rich Shift Monitoring (Bank 2):

Possible Causes:



Fuel pressure is excessively high (rich air fuel)
 
Fuel injectors sticking open (one or more mechanical faults)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1166



HO2S-22 (Bank 2 Sensor 2) Lean Shift Monitoring (Bank 2):

Possible Causes:



Air leaks in the intake manifold, throttle body or PCV system
 
Fuel pressure is excessively low (lean air fuel)
 
Fuel injectors restricted (one or more has a mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1167



HO2S-22 (Bank 2 Sensor 2) Rich Shift Monitoring (Bank 2):

Possible Causes:



Fuel pressure is excessively high (rich air fuel)
 
Fuel injectors sticking open (one or more with mechanical fault)
 
HO2S assembly is damaged or has failed
 
HO2S heater assembly is damaged or has failed
 

Trouble Code: P1168



Closed Loop Malfunction Detected (Bank 2):

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S is damaged, contaminated or has failed
 
HO2S heater is damaged or has failed
 

Trouble Code: P1211



VDC/TCS/ABS Control Unit Malfunction:

Possible Causes:



Traction Control System (TCS) related parts have failed
 
VDCTCS/ABS controller is damaged or has failed
 

Trouble Code: P1212



VDC/TCS/ABS Communication Line Malfunction:

Possible Causes:



VDCTCS/ABS communication line is open or shorted to ground
 
VDCTCS/ABS controller has failed
 
System voltage is too low (a severely discharged battery)
 

Trouble Code: P1217



Engine Over-Temperature Condition:

Possible Causes:



Check cooling system components (i.e., hoses, cap, coolant)
 
Check the thermostat operation (it may be stuck partly closed)
 
Engine cooling fan circuit(s) open or shorted to ground
 
Engine cooling fan is damaged or has failed
 

Trouble Code: P1225



Closed Throttle Learning Position Range/Performance:

Possible Causes:



Electronic Throttle Control Actuator is damaged or has failed (i.e., the TP1 and TP2 sensor assemblies in the ETCA failed).
 

Trouble Code: P1226



Closed Throttle Learning Position Range/Performance:

Possible Causes:



Electronic Throttle Control Actuator is damaged or has failed (i.e., the TP1 and TP2 sensor assemblies in the ETCA failed).
 

Trouble Code: P1229



Accelerator Pedal Position Sensor 2 Power Circuit Short:

Possible Causes:



AAP1 and/or APP2 sensor circuits are shorted to ground
 
APP2 sensor connector is damaged (shorted to ground)
 
ETC Actuator assembly is internally shorted to power or ground
 
TP1 and TP2 sensor circuits are shorted together or to ground
 
PCM terminal to the VREF power circuit is open
 
VREF power circuit to the APP1, APP2, MAF, EVAP pressure sensor, PSPS or refrigerant pressure sensor shorted to ground
 

 
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