Altima 2007-2009

2.5L L4 VIN - Std 14

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Trouble Code: P0B51-123



Hybrid Battery Voltage Sensor "E" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B56-123



Hybrid Battery Voltage Sensor "F" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B5B-123



Hybrid Battery Voltage Sensor "G" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B60-123



Hybrid Battery Voltage Sensor "H" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B65-123



Hybrid Battery Voltage Sensor "I" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B6A-123



Hybrid Battery Voltage Sensor "J" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B6F-123



Hybrid Battery Voltage Sensor "K" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B74-123



Hybrid Battery Voltage Sensor "L" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B79-123



Hybrid Battery Voltage Sensor "M" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B7E-123



Hybrid Battery Voltage Sensor "N" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B83-123



Hybrid Battery Voltage Sensor "O" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B88-123



Hybrid Battery Voltage Sensor "P" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B8D-123



Hybrid Battery Voltage Sensor "Q" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P0B92-123



Hybrid Battery Voltage Sensor "R" Circuit Low

Possible Causes:



Battery smart unit
 
HV battery
 

Trouble Code: P1148



Closed Loop Control Function (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Air fuel ratio (A/F) sensor (sensor 1 on V6 and V8) circuit is open or shorted.
 
Air fuel ratio (A/F) sensor (sensor 1 on V6 and V8)
 
Air fuel ratio (A/F) sensor (sensor 1 on V6 and V8) heater
 

Trouble Code: P1186



LF Seat Belt Pre-Tensioner Circuit Open

Possible Causes:



1. Visually check the wiring harness connection.
 
2. Replace the harness if it has visible damage.
 
3. Replace the front LH seat belt pre-tensioner.
 
4. Replace the air bag diagnosis sensor unit.
 
5. Replace the related harness.
 

Trouble Code: P1187



LF Seat Belt Pre-Tensioner Circuit Short

Possible Causes:



1. Visually check the wiring harness connection.
 
2. Replace the harness if it has visible damage.
 
3. Replace the front LH seat belt pre-tensioner.
 
4. Replace the air bag diagnosis sensor unit.
 
5. Replace the related harness.
 

Trouble Code: P1188



LF Seat Belt Pre-Tensioner Circuit Short

Possible Causes:



1. Visually check the wiring harness connection.
 
2. Replace the harness if it has visible damage.
 
3. Replace the front LH seat belt pre-tensioner.
 
4. Replace the air bag diagnosis sensor unit.
 
5. Replace the related harness.
 

Trouble Code: P1189



LF Seat Belt Pre-Tensioner Circuit Short

Possible Causes:



1. Visually check the wiring harness connection.
 
2. Replace the harness if it has visible damage.
 
3. Replace the front LH seat belt pre-tensioner.
 
4. Replace the air bag diagnosis sensor unit.
 
5. Replace the related harness.
 

Trouble Code: P1195



Engine Does Not Start (Hybrid)

Possible Causes:



Intake air leaks
 
Incorrect PCV hose connection
 
Mass air flow sensor
 
Electric throttle control actuator
 
Fuel injector
 
Fuel run out
 
Incorrect fuel pressure
 
Spark plug
 
Ignition coil
 
Ignition signal circuit is open or shorted
 
Insufficient compression
 

Trouble Code: P1196



Engine Lacks Power (Hybrid)

Possible Causes:



Intake air leaks
 
Incorrect PCV hose connection
 
Mass air flow sensor
 
Electric throttle control actuator
 
Fuel injector
 
Fuel run out
 
Incorrect fuel pressure
 
Spark plug
 
Ignition coil
 
Ignition signal circuit is open or shorted
 
Insufficient compression
 

Trouble Code: P1197



Fuel Run Out (Hybrid)

Possible Causes:



Out of fuel
 

Trouble Code: P1217



Engine Over Temperature (Overheat) (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Cooling fan circuit is open or shorted.
 
Cooling fan motor
 
IPDM E/R (cooling fan relays-1, -2 and -3)
 
Cooling fan relays-4 and -5
 
Radiator hose
 
Radiator
 
Reservoir tank
 
Radiator cap
 
Water pump
 
Thermostat
 

Trouble Code: P1225



Closed Throttle Position Learning Performance (Includes Hybrid Models)

Possible Causes:



Electric throttle control actuator (TP sensor 1 and 2)
 

Trouble Code: P1226



Closed Throttle Position Learning Performance (Includes Hybrid Models)

Possible Causes:



Electric throttle control actuator (TP sensor 1 and 2)
 

Trouble Code: P1421



Cold Start Emission Reduction Strategy Monitoriing (Includes Hybrid Models)

Possible Causes:



Lack of intake air volume
 
Fuel injection system
 
ECM
 

Trouble Code: P1564



ASCD Steering Switch Malfunction (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- ASCD switch circuit is open or shorted.
 
ASCD steering switch
 
ECM
 

Trouble Code: P1572



ACSD Brake Switch Malfunction (Includes Hybrid Models)

Possible Causes:



Stop lamp switch circuit is shorted.
 
ASCD brake switch circuit is shorted.
 
ASCD clutch switch circuit is shorted (M/T).
 
Stop lamp switch
 
ASCD brake switch
 
ASCD clutch switch (M/T)
 
Incorrect stop lamp switch installation
 
Incorrect ASCD brake switch installation
 
Incorrect ASCD clutch switch installation (M/T)
 
ECM
 

Trouble Code: P1574



ASCD Vehicle Speed Sensor Malfunction (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- CAN communication line is open or shorted.
 
- Combination meter circuit is open or shorted.
 
TCM (CVT models)
 
Unified meter and A/C amp.
 
Combination meter
 
ABS actuator and electric unit (control unit)
 
ECM
 

Trouble Code: P1610



NATS Antenna Amp. or Lock Mode

Possible Causes:



Harness or connectors
 
- The key slot circuit is open or shorted
 
Key slot
 
BCM
 

Trouble Code: P1611



ID Discord -- IMMU-ECM

Possible Causes:



BCM
 
ECM
 

Trouble Code: P1612



Chain of ECM-IMMU

Possible Causes:



Harness or connectors
 
- The CAN communication line is open or shorted
 
BCM
 
ECM
 

Trouble Code: P1615



Difference of Key

Possible Causes:



Intelligent Key or Mechanical Key
 
BCM
 

Trouble Code: P1715



Input Speed Sensor (Primary Speed Sensor/TCM Output)

Possible Causes:



Harness or connectors
 
- CAN communication line is open or shorted
 
- Primary speed sensor circuit is open or shorted
 
TCM
 

Trouble Code: P1726



Throttle Control Signal Circuit

Possible Causes:



Harness or connectors
 
- Sensor circuit is open or shorted.
 

Trouble Code: P1805



Brake Switch Signal Malfunction (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Stop lamp switch circuit is open or shorted.
 
Stop lamp switch
 

Trouble Code: P2100



Throttle Control Motor Relay Circuit is Open (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Throttle control motor relay circuit is open.
 
Throttle control motor relay
 

Trouble Code: P2101



Electric Throttle Control Performance (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Throttle control motor circuit is open or shorted
 
Electric throttle control actuator
 

Trouble Code: P2103



Throttle Control Motor Relay Circuit is Short (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Throttle control motor relay circuit is shorted
 
Throttle control motor relay
 

Trouble Code: P2118



Throttle Control Motor Circuit Short (Includes Hybrid Models)

Possible Causes:



Harness or connectors
 
- Throttle control motor circuit is shorted.
 
Electric throttle control actuator (Throttle control motor)
 

 
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