Sentra 1997

1.6L L4 VIN A Auto 1

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1.6L L4 VIN A Auto

Trouble Code: P0000



No Self-Diagnostic Failure Detected

Possible Causes:



This trouble code indicates there are no codes in any other onboard controllers on this vehicle!
 

Trouble Code: P0100



Mass Airflow Sensor Circuit Malfunction

Possible Causes:



Air Intake leaks located after the MAF sensor assembly
 
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
 
PCM has failed
 

Trouble Code: P0100



Mass Air Flow Sensor

Possible Causes:



A) & C) above:
 
Harness or connectors
 
- sensor circuit is open or shorted
 
Mass air flow sensor
 
 
B), D) & E) above:
 
Harness or connectors
 
- sensor circuit is open or shorted
 
Intake air leaks
 
Mass air flow sensor
 

Trouble Code: P0105



Absolute Pressure Sensor Circuit Malfunction

Possible Causes:



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

Trouble Code: P0110



Intake Air Temperature Sensor

Possible Causes:



Check harness and connectors:
 
- circuit is open or shorted
 
IAT sensor
 

Trouble Code: P0115



Engine Coolant Temperature Sensor Circuit Malfunction

Possible Causes:



ECT sensor signal circuit open or shorted to ground
 
ECT sensor signal circuit shorted to VREF or to system power
 
ECT sensor is damaged or has failed (out of calibration)
 
ECM/PCM has failed
 

Trouble Code: P0120



Throttle Position Sensor

Possible Causes:



Condition A:
 
Harness or connectors
 
- Sensor circuit is open or shorted
 
Throttle position sensor
 
 
Condition B:
 
Harness or connectors
 
- Sensor circuit is open or shorted
 
Throttle position sensor
 
Fuel injector
 
CMP sensor
 
MAF sensor
 
 
Condition C:
 
Harness or connectors
 
- Sensor circuit is open or shorted
 
Intake air leaks
 
Throttle position sensor
 

Trouble Code: P0125



Insufficient Engine Coolant Temperature for Closed Loop Fuel Control (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- High resistance in the circuit
 
Engine coolant temperature sensor
 
Thermostat
 

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 has failed
 
PCM has failed
 

Trouble Code: P0130



Front Heated Oxygen Sensor (Right Bank)

Possible Causes:



Check harness and connectors:
 
- circuit is open or shorted
 
Front HO2S (right bank)
 
Fuel pressure
 
Injectors
 
Intake air leaks
 

Trouble Code: P0131



Front Heated Oxygen Sensor

Possible Causes:



Front HO2S
 
Front HO2S heater
 
Fuel pressure
 
Injectors
 
Intake air leaks
 

Trouble Code: P0132



Front Heated Oxygen Sensor

Possible Causes:



Front HO2S
 
Front HO2S heater
 
Fuel pressure
 
Injectors
 

Trouble Code: P0133



Air Fuel Ratio (A/F) Sensor 1 Circuit Slow Response (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Air fuel ratio (A/F) sensor circuit is open or shorted.
 
Air fuel ratio (A/F) sensor 1
 
Air fuel ratio (A/F) sensor heater 1
 
Fuel pressure
 
Fuel injector
 
Intake air leaks
 
Exhaust gas leaks
 
PCV valve
 
Mass air flow sensor
 

Trouble Code: P0134



Front Heated Oxygen Sensor - High Voltage

Possible Causes:



Harness or connectors
 
- Sensor circuit is open or shorted
 
Front HO2S
 

Trouble Code: P0135



Front Heated Oxygen Sensor Heater

Possible Causes:



Check harness and connectors:
 
- circuit is open or shorted
 
Front HO2S heater
 

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 damaged or has failed
 
PCM has failed
 

Trouble Code: P0137



Heated Oxygen Sensor 2 Circuit Low Voltage (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Heated oxygen sensor 2 circuit open or shorted.
 
Heated oxygen sensor 2
 
Fuel pressure
 
Fuel injector
 
Intake air leaks
 

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 may be contaminated or it has failed
 
HO2S heater is damaged or has failed
 
PCM has failed
 
TSB 01-016 (9/01) contains information related to this code
 

Trouble Code: P0139



Heated Oxygen Sensor 2 Circuit Slow Response (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Heated oxygen sensor circuit is open or shorted.
 
Heated oxygen sensor 2
 
Fuel pressure
 
Fuel injector
 
Intake air leaks
 

Trouble Code: P0140



Rear Heated Oxygen Sensor - High Voltage

Possible Causes:



Harness or connectors
 
- Sensor circuit is open or shorted
 
Rear HO2S
 

Trouble Code: P0141



Rear Heated Oxygen Sensor Heater (Right Bank)

Possible Causes:



Check harness and connectors:
 
- circuit is open or shorted
 
Rear HO2S heater
 

Trouble Code: P0171



Fuel Injection System Too Lean (Includes Hybrid Models)

Possible Causes:



Intake air leaks
 
Air fuel ratio (A/F) sensor 1 (front heated oxygen sensor)
 
Fuel injector
 
Exhaust gas leaks
 
Incorrect fuel pressure
 
Lack of fuel
 
Mass air flow sensor
 
Incorrect PCV hose connection
 

Trouble Code: P0172



Fuel Injection System Too Rich (Includes Hybrid Models)

Possible Causes:



Air fuel ratio (A/F) sensor 1 (front heated oxygen sensor)
 
Fuel injector
 
Exhaust gas leaks
 
Incorrect fuel pressure
 
Mass air flow sensor
 

Trouble Code: P0180



Fuel Temperature Sensor

Possible Causes:



Check harness and connectors:
 
- circuit is open or shorted
 
Fuel temperature sensor
 

Trouble Code: P0300



Multiple Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCM system
 
Base engine problem affecting 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 more than 1 cylinder (i.e., contaminated, dirty or sticking fuel injectors)
 
Ignition system problem affecting two or more cylinders
 
Vehicle driven while quite low or until it ran out of fuel
 

Trouble Code: P0300



Multiple Cylinder Misfire Detected (Includes Hybrid Models)

Possible Causes:



Improper spark plug
 
Insufficient compression
 
Incorrect fuel pressure
 
Fuel injector circuit is open or shorted
 
Fuel injector
 
Intake air leak
 
The ignition signal circuit is open or shorted
 
Lack of fuel
 
Drive plate or flywheel
 
Air fuel ratio (A/F) sensor 1
 
Incorrect PCV hose connection
 

Trouble Code: P0301



No.1 Cylinder Misfire Detected (Includes Hybrid Models)

Possible Causes:



Improper spark plug
 
Insufficient compression
 
Incorrect fuel pressure
 
Fuel injector circuit is open or shorted
 
Fuel injector
 
Intake air leak
 
The ignition signal circuit is open or shorted
 
Lack of fuel
 
Drive plate or flywheel
 
Air fuel ratio (A/F) sensor 1
 
Incorrect PCV hose connection
 

Trouble Code: P0302



Cylinder 2 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCM system
 
Base engine mechanical fault that affects only one cylinder
 
Fuel delivery component fault that affects only one cylinder (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil or plug) that affects one cylinder
 
Vehicle driven while quite low or until it ran out of fuel
 

Trouble Code: P0302



No. 2 Cylinder Misfire Detected (Includes Hybrid Models)

Possible Causes:



Improper spark plug
 
Insufficient compression
 
Incorrect fuel pressure
 
Fuel injector circuit is open or shorted
 
Fuel injector
 
Intake air leak
 
The ignition signal circuit is open or shorted
 
Lack of fuel
 
Drive plate or flywheel
 
Air fuel ratio (A/F) sensor 1
 
Incorrect PCV hose connection
 

Trouble Code: P0303



Cylinder 3 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCM system
 
Base engine mechanical fault that affects only one cylinder
 
Fuel delivery component fault that affects only one cylinder (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil or plug) that affects one cylinder
 
Vehicle driven while quite low or until it ran out of fuel
 

Trouble Code: P0303



No. 3 Cylinder Misfire Detected (Includes Hybrid Models)

Possible Causes:



Improper spark plug
 
Insufficient compression
 
Incorrect fuel pressure
 
Fuel injector circuit is open or shorted
 
Fuel injector
 
Intake air leak
 
The ignition signal circuit is open or shorted
 
Lack of fuel
 
Drive plate or flywheel
 
Air fuel ratio (A/F) sensor 1
 
Incorrect PCV hose connection
 

Trouble Code: P0304



Cylinder 4 Misfire Detected

Possible Causes:



Air leak in the intake manifold, or in the EGR or PCM system
 
Base engine mechanical fault that affects only one cylinder
 
Fuel delivery component fault that affects only one cylinder (i.e., a contaminated, dirty or sticking fuel injector)
 
Ignition system problem (coil or plug) that affects one cylinder
 
Vehicle driven while quite low or until it ran out of fuel
 

Trouble Code: P0304



No. 4 Cylinder Misfire Detected (Includes Hybrid Models)

Possible Causes:



Improper spark plug
 
Insufficient compression
 
Incorrect fuel pressure
 
Fuel injector circuit is open or shorted
 
Fuel injector
 
Intake air leak
 
The ignition signal circuit is open or shorted
 
Lack of fuel
 
Drive plate or flywheel
 
Air fuel ratio (A/F) sensor 1
 
Incorrect PCV hose connection
 

Trouble Code: P0325



Knock Sensor Circuit Malfunction (Bank 1)

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: P0325



Knock Sensor (KS) Circuit

Possible Causes:



Check harness and connectors:
 
- circuit is open or shorted
 
Knock sensor
 

Trouble Code: P0335



Crankshaft Position Sensor (POS) Circuit (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- CKP sensor (POS) circuit is open or shorted.
 
- CMP sensor (PHASE) (bank 2) circuit is shorted.
 
- EVT control position sensor (bank 2) circuit is shorted.
 
- Battery current sensor circuit is shorted.
 
- APP sensor 2 circuit is shorted.
 
- Crankshaft position sensor (POS) circuit is open or shorted.
 
- Accelerator pedal position sensor circuit is shorted.
 
- Refrigerant pressure sensor circuit is shorted.
 
- EVAP control system pressure sensor circuit is sorted.
 
- Tumble control valve position sensor circuit is shorted.
 
Crankshaft position sensor (POS)
 
Accelerator pedal position sensor
 
Camshaft position sensor (PHASE) (bank 2)
 
Exhaust valve timing control position sensor (bank 2)
 
Battery current sensor
 
Refrigerant pressure sensor
 
EVAP control system pressure sensor
 
Tumble control valve position sensor
 
Signal plate
 
Battery current sensor
 

Trouble Code: P0340



Camshaft Position Sensor Circuit (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- CMP sensor (PHASE) (bank 1) circuit is open or shorted.
 
Camshaft position sensor (PHASE) (bank 1)
 
Camshaft (INT)
 
Starter motor
 
Starting system circuit
 
Dead (Weak) battery
 

Trouble Code: P0400



EGR System Function - No Flow

Possible Causes:



EGR valve (stuck closed)
 
EGRC-BPT valve
 
Vacuum hose
 
EGRC solenoid valve
 
EGR passage
 
EGR temperature sensor
 
Exhaust gas leaks
 

Trouble Code: P0402



EGRC-BPT Valve Malfunction

Possible Causes:



EGRC-BPT valve
 
EGR valve
 
Loose, disconnected or blocked tube
 
CMP sensor
 
Blocked exhaust system
 
Blocked EGR orifice
 
MAF sensor
 
EGRC solenoid valve
 

Trouble Code: P0402



EGRC-BPT Valve Function Conditions

Possible Causes:



EGRC-BPT solenoid control circuit is open or shorted to ground
 
EGRC-BPT valve vacuum hose is clogged or disconnected
 
Orifice missing in vacuum hose between EGRC-BPT valve and the EGRC solenoid valve
 
Exhaust system is damaged or has collapsed
 

 
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