Infiniti Car 1998-05

3.0L V6 - Auto 1

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3.0L V6 - Auto

Trouble Code: P0100



Mass Airflow Sensor Circuit Malfunction:

Possible Causes:



Intake air leaks after the MAF sensor location
 
MAF sensor signal circuit is open or shorted to ground
 
MAF sensor signal circuit is shorted to VREF or system power
 
MAF sensor has failed
 
TSB 01-029A (9/01) contains information related to this code
 

Trouble Code: P0105



Absolute Pressure Sensor Circuit Malfunction:

Possible Causes:



Absolute pressure sensor signal circuit open, shorted to ground
 
Absolute pressure sensor signal circuit is shorted to VREF
 
Absolute pressure sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0110



Intake Air Temperature Sensor Signal Range/Performance:

Possible Causes:



IAT sensor signal circuit is open, shorted to ground or to VREF
 
IAT sensor is damaged or has failed (out of calibration)
 
PCM has failed
 

Trouble Code: P0115



Engine Coolant Temperature Sensor Circuit Malfunction:

Possible Causes:



ECT sensor connector is damaged or loose (intermittent fault)
 
ECT sensor signal circuit open, shorted to ground or to VREF
 
ECT sensor is damaged or has failed (out of calibration)
 
PCM has failed
 

Trouble Code: P0120



Throttle Position Sensor Circuit Malfunction

Possible Causes:



TP sensor signal circuit open or shorted to ground
 
TP sensor signal circuit shorted to VREF or to system power
 
TP sensor is damaged or has failed (perform a sweep test)
 
PCM has failed
 

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: P0130



HO2S-11 (Bank 1 Sensor 1) Closed Loop Fuel Control:

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0131



HO2S-11 (Bank 1 Sensor 1) Circuit Low Input (Lean Shift):

Possible Causes:



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

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: P0135



HO2S-11 (Bank 1 Sensor 1) Heater Circuit Malfunction:

Possible Causes:



HO2S heater control circuit is open or shorted to ground
 
HO2S heater control circuit is shorted to power
 
HO2S heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P0136



HO2S-12 (Bank 1 Sensor 2) Closed Loop Fuel Control:

Possible Causes:



HO2S signal circuit is open or shorted to ground
 
HO2S is deteriorated or has a fuel contamination condition
 
HO2S is damaged or it has failed
 

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: P0138



HO2S-12 (Bank 1 Sensor 2) Circuit High Input (Rich Shift):

Possible Causes:



Fuel pressure regulator leaking or fuel injectors leaking
 
HO2S connector is damaged or loose (an open circuit)
 
HO2S signal circuit is open or shorted to power
 
HO2S assembly is contaminated or it has failed
 
TSB 02-022 (4/02) contains information related to this code
 

Trouble Code: P0139



HO2S-12 (Bank 1 Sensor 2) 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)
 
TSB 02-022 (4/02) contains information related to this code
 

Trouble Code: P0140



HO2S-12 (Bank 1 Sensor 2) Insufficient Activity Detected:

Possible Causes:



HO2S heater is damaged or has failed
 
HO2S signal circuit is open or shorted to ground
 
HO2S element is contaminated, damaged or it has failed
 
TSB 02-022 (4/02) contains information related to this code
 

Trouble Code: P0141



HO2S-12 (Bank 1 Sensor 2) Heater Circuit Malfunction:

Possible Causes:



HO2S heater control circuit is open or shorted to ground
 
HO2S heater control circuit is shorted to power
 
HO2S heater is contaminated, damaged or it has failed
 
PCM has failed
 

Trouble Code: P0151



HO2S-21 (Bank 2 Sensor 1) 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: P0152



HO2S-21 (Bank 2 Sensor 1) Circuit High Input (Rich Shift):

Possible Causes:



Fuel pressure regulator leaking or fuel injectors leaking
 
HO2S connector is damaged or loose (an open circuit)
 
HO2S signal circuit is open or shorted to power
 
HO2S is contaminated or it 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: P0155



HO2S-21 (Bank 2 Sensor 1) Heater Circuit Malfunction:

Possible Causes:



HO2S heater control circuit is open or shorted to ground
 
HO2S heater control circuit is shorted to power
 
HO2S heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P0156



HO2S-22 (Bank 2 Sensor 2) Closed Loop Fuel Control:

Possible Causes:



HO2S connector is damaged or loose
 
HO2S signal circuit is open or shorted to ground
 
HO2S is damaged or it has failed
 

Trouble Code: P0157



HO2S-22 (Bank 2 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: 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: P0159



HO2S-22 (Bank 2 Sensor 2) 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)
 
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: P0161



HO2S-22 (Bank 2 Sensor 2) Heater Circuit Malfunction:

Possible Causes:



HO2S heater control circuit is open or shorted to ground
 
HO2S heater control circuit is shorted to power
 
HO2S heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P0171



Fuel Trim Lean (Bank 1):

Possible Causes:



Air leaks after the MAF sensor, EGR, Intake Manifold or PCV
 
Exhaust system leaks before or near the front HO2S location
 
Fuel system not supplying enough fuel under high fuel demand conditions (i.e., fuel pump weak, fuel filter or fuel injectors dirty)
 
Vehicle running out of fuel, or driven until it runs out of fuel
 
TSB 02-024 (5/02) contains information related to this code
 

Trouble Code: P0172



Fuel Trim Rich (Bank 1):

Possible Causes:



Engine oil overfill condition, or camshaft timing is incorrect
 
EVAP recovery system failure (pulling in excessive fuel vapors)
 
HO2S element may be contaminated with water or alcohol
 
Leaking fuel pressure regulator or leaking fuel injector(s)
 
MAF sensor signals invalid (it may be dirty or out of calibration)
 

Trouble Code: P0174



Fuel Trim Lean (Bank 2):

Possible Causes:



Air leaks after the MAF sensor, EGR, Intake Manifold or PCV
 
Exhaust system leaks before or near the front HO2S location
 
Fuel system not supplying enough fuel under high fuel demand conditions (i.e., fuel pump weak, fuel filter or fuel injectors dirty)
 
Vehicle running out of fuel, or driven until it runs out of fuel
 

Trouble Code: P0175



Fuel Trim Rich (Bank 2):

Possible Causes:



Engine oil overfill condition, or camshaft timing is incorrect
 
EVAP recovery system failure (pulling in excessive fuel vapors)
 
HO2S element may be contaminated with water or alcohol
 
Leaking or contaminated fuel injector(s)
 
Leaking fuel pressure regulator
 
MAF sensor signals invalid (it may be dirty or out of calibration)
 

Trouble Code: P0180



Fuel Tank Temperature Sensor Circuit Malfunction:

Possible Causes:



FTT sensor connector is damaged or loose (open or shorted)
 
FTT sensor signal circuit is open or shorted to ground
 
FTT sensor ground circuit is open
 
Fuel tank temperature sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0217



Engine Over-Temperature Condition Detected:

Possible Causes:



Blocked air passages at front of the vehicle (recent damage-)
 
Blocked or restricted radiator passages
 
Cooling fan control circuit open or shorted to ground
 
Cooling system problems (low coolant, thermostat closed)
 

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
 

 
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