Infiniti Car 1998-05

4.1L V8 VIN B Auto 1

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4.1L V8 VIN B Auto

Trouble Code: P0125



ECT Sensor Excessive Time To Enter Closed Loop:

Possible Causes:



Check the operation of the thermostat (it may be stuck open)
 
ECT sensor signal circuit has a high resistance condition
 
ECT sensor is damaged or has failed (out of calibration)
 

Trouble Code: P0132



HO2S-11 (Bank 1 Sensor 1) Circuit High Input (Rich Shift):

Possible Causes:



Fuel pressure regulator leaking or fuel injectors leaking
 
HO2S connector is damaged or loose (intermittent open circuit)
 
HO2S signal circuit is open or shorted to power
 
HO2S is contaminated or it has failed
 

Trouble Code: P0133



HO2S-11 (Bank 1 Sensor 1) Slow Response:

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S element is contaminated, or HO2S heater has failed
 
Intake air leaks, exhaust manifold leaks or PCV system leaks
 
MAF sensor out of calibration (it may be dirty or contaminated)
 

Trouble Code: P0134



HO2S-11 (Bank 1 Sensor 1) Insufficient Activity Detected :

Possible Causes:



HO2S heater is damaged or has failed
 
HO2S signal circuit is open or shorted to ground
 
HO2S is damaged, has fuel contamination or has failed
 
TSB 02-024 (5/02) contains information related to this code
 

Trouble Code: P0137



HO2S-12 (Bank 1 Sensor 2) Circuit Low Input (Lean Shift):

Possible Causes:



Low fuel pressure, fuel filter restricted or fuel injectors plugged
 
HO2S may be contaminated or it has failed
 
HO2S heater is damaged or has failed
 

Trouble Code: P0153



HO2S-21 (Bank 2 Sensor 1) Slow Response:

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S element is contaminated, or HO2S heater has failed
 
Intake air leaks, exhaust manifold leaks or PCV system leaks
 
MAF sensor out of calibration (it may be dirty or contaminated)
 

Trouble Code: P0154



HO2S-21 (Bank 2 Sensor 1) Insufficient Activity Detected:

Possible Causes:



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

Trouble Code: P0158



HO2S-22 (Bank 2 Sensor 2) Circuit High Input (Rich Shift):

Possible Causes:



Low fuel pressure, fuel filter restricted or fuel injectors plugged
 
HO2S may be contaminated or it has failed
 
HO2S heater is damaged or has failed
 
TSB 02-008 (5/02) contains information related to this code
 

Trouble Code: P0160



HO2S-22 (Bank 2 Sensor 2) Insufficient Activity Detected:

Possible Causes:



HO2S element is contaminated
 
HO2S heater is damaged or has failed
 
HO2S signal circuit is open or shorted to ground
 
HO2S is damaged or it has failed
 
TSB 02-008 (5/02) contains information related to this code
 

Trouble Code: P0300



Multiple Misfire Detected:

Possible Causes:



Base engine problem that affects two or more cylinders
 
CMP or CKP sensor signals erratic or out of phase
 
EGR valve stuck open, or EVAP purge system has failed
 
Fuel delivery component fault that affects two or more cylinders (e.g., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem that affects two or more cylinders
 
Vehicle driven while quite low on fuel (less than 1/8 of a tank)
 

Trouble Code: P0301



Cylinder 1 Misfire Detected:

Possible Causes:



Base engine mechanical problem that affects only Cylinder 1
 
EGR valve stuck open, or EVAP purge system has failed
 
Fuel delivery component fault that affects only Cylinder 1 (e.g., a contaminated, dirty or sticking fuel injector)
 
Ignition system fault (Coil or Plug) that affects only Cylinder 1
 

Trouble Code: P0302



Cylinder 2 Misfire Detected:

Possible Causes:



Base engine mechanical problem that affects only Cylinder 2
 
EGR valve stuck open, or EVAP purge system has failed
 
Fuel delivery component fault that affects only Cylinder 2 (e.g., a contaminated, dirty or sticking fuel injector)
 
Ignition system fault (Coil or Plug) that affects only Cylinder 2
 

Trouble Code: P0303



Cylinder 3 Misfire Detected:

Possible Causes:



Base engine mechanical problem that affects only Cylinder 3
 
EGR valve stuck open, or EVAP purge system has failed
 
Fuel delivery component fault that affects only Cylinder 3 (e.g., a contaminated, dirty or sticking fuel injector)
 
Ignition system fault (Coil or Plug) that affects only Cylinder 3
 

Trouble Code: P0304



Cylinder 4 Misfire Detected:

Possible Causes:



Base engine mechanical problem that affects only Cylinder4
 
EGR valve stuck open, or EVAP purge system has failed
 
Fuel delivery component fault that affects only Cylinder 4 (e.g., a contaminated, dirty or sticking fuel injector)
 
Ignition system fault (Coil or Plug) that affects only Cylinder 4
 

Trouble Code: P0305



Cylinder 5 Misfire Detected:

Possible Causes:



Base engine mechanical problem that affects only Cylinder 5
 
EGR valve stuck open, or EVAP purge system has failed
 
Fuel delivery component fault that affects only Cylinder 5 (e.g., a contaminated, dirty or sticking fuel injector)
 
Ignition system fault (Coil or Plug) that affects only Cylinder 5
 

Trouble Code: P0306



Cylinder 6 Misfire Detected:

Possible Causes:



Base engine mechanical problem that affects only Cylinder 6
 
EGR valve stuck open, or EVAP purge system has failed
 
Fuel delivery component fault that affects only Cylinder 6 (e.g., a contaminated, dirty or sticking fuel injector)
 
Ignition system fault (Coil or Plug) that affects only Cylinder 6
 

Trouble Code: P0307



Cylinder 7 Misfire Detected:

Possible Causes:



Base engine mechanical problem that affects only Cylinder 7
 
EGR valve stuck open, or EVAP purge system has failed
 
Fuel delivery component fault that affects only Cylinder 7 (e.g., a contaminated, dirty or sticking fuel injector)
 
Ignition system fault (Coil or Plug) that affects only Cylinder 7
 

Trouble Code: P0308



Cylinder 8 Misfire Detected:

Possible Causes:



Base engine mechanical problem that affects only Cylinder 8
 
EGR valve stuck open, or EVAP purge system has failed
 
Fuel delivery component fault that affects only Cylinder 8 (e.g., a contaminated, dirty or sticking fuel injector)
 
Ignition system fault (Coil or Plug) that affects only Cylinder 8
 

Trouble Code: P0330



Knock Sensor Circuit Malfunction (Bank 2):

Possible Causes:



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

Trouble Code: P0335



Crankshaft Position Sensor Circuit Malfunction:

Possible Causes:



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

Trouble Code: P0340



Camshaft Position Sensor Circuit Malfunction:

Possible Causes:



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

Trouble Code: P0420



Catalyst Efficiency Below Normal (Bank 1):

Possible Causes:



Air leaks at the exhaust manifold or in the exhaust pipes
 
Catalytic converter is contaminated, damaged or has failed
 
Continuous engine misfire conditions, or low ignition coil output
 
Front HO2S is older (aged) than the rear HO2S (HO2S is lazy)
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 
Rear HO2S is loose in the mounting hole (check it for a leak)
 

Trouble Code: P0430



Catalyst Efficiency Below Normal (Bank 2):

Possible Causes:



Air leaks at the exhaust manifold or in the exhaust pipes
 
Catalytic converter is contaminated, damaged or has failed
 
Continuous engine misfire conditions, or low ignition coil output
 
Front HO2S is older (aged) than the rear HO2S (HO2S is lazy)
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 
Rear HO2S is loose in the mounting hole (check it for a leak)
 

Trouble Code: P0440



EVAP System Small Leak (0.040") Detected:

Possible Causes:



EVAP purge solenoid is damaged or has failed
 
EVAP emission canister clogged or restricted
 
Fuel tank cap loose, damaged or missing, or vacuum line is off
 
TSB 00-046 (7/00) contains information related to this code
 

Trouble Code: P0443



EVAP Canister Purge Solenoid Circuit Malfunction:

Possible Causes:



Purge solenoid connector is damaged/loose (intermittent fault)
 
Purge solenoid control circuit open, shorted to ground or power
 
Purge solenoid is damaged or has failed
 
PCM has failed
 
TSB 00-046 (7/00) contains information related to this code
 

Trouble Code: P0446



EVAP Canister Vent Control Solenoid Circuit Malfunction:

Possible Causes:



Canister vent control solenoid connector is damaged or loose
 
Canister vent control solenoid circuit is open (high voltage)
 
Canister vent control solenoid is damaged or failed
 
PCM is damaged or has failed
 

Trouble Code: P0450



EVAP Pressure Sensor Circuit Malfunction:

Possible Causes:



EVAP pressure sensor circuit is open, shorted to ground or B+
 
EVAP pressure sensor is damaged or has failed
 
PCM is damaged
 
TSB 00-046 (7/00) contains information related to this code
 

Trouble Code: P0456



EVAP System Very Small Leak (0.020") Detected:

Possible Causes:



EVAP control system pressure sensor is damaged or has failed
 
EVAP purge solenoid is damaged or has failed
 
EVAP canister vent control valve is damaged or has failed
 
Fuel tank cap not tightened properly or the wrong part number
 
Fuel tank temperature sensor is damaged or has failed
 
Fuel tank vacuum relief valve is damaged or has failed
 
Very small leak in the EVAP canister or in the fuel tank area
 
ORVR system is damaged or has a small leak in a component
 
Refueling control valve is damaged or has failed
 
TSB 00-046 (7/00) contains information related to this code
 

Trouble Code: P0500



Vehicle Speed Sensor Circuit Malfunction:

Possible Causes:



ABS/TCS control unit is damaged or has failed
 
Combination meter is damaged or has failed
 
VSS signal circuit is open, shorted to ground or shorted to B+
 
VSS is damaged or has failed
 
PCM has failed
 

Trouble Code: P0505



Idle Air Control, Auxiliary Air Control Valve:

Possible Causes:



IACV-AAC valve control circuit is open or shorted to ground
 
IACV-AAC valve control circuit is shorted to system power (B+)
 
IACV-AAC valve is damaged or has failed
 
PCM is damaged or has failed
 

Trouble Code: P0510



Closed Throttle Position Switch Circuit Malfunction:

Possible Causes:



Closed throttle position switch connector is damaged or loose
 
Closed throttle position switch signal circuit is open or grounded
 
Closed throttle position switch signal circuit is shorted to power
 
Closed throttle position switch or TP sensor is damaged/failed
 

Trouble Code: P0600



A/T Communication Line Circuit Malfunction:

Possible Causes:



TCM communication line circuit is open or shorted to ground
 
TCM communication line circuit shorted to VREF or power (B+)
 
Clear the codes and retest for DTC P0600. If the same code resets, substitute a known good TCM or PCM and retest. If the code does not reset, the original TCM PCM has failed
 

Trouble Code: P0605



PCM Internal Fault Detected:

Possible Causes:



Clear the codes and retest for DTC P0605. 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: 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
 

 
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