Nissan Car Altima & Sentra 1999-06

1.8L L4 - Std 2

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Trouble Code: P0440



EVAP System Small Leak (0.040") Detected

Possible Causes:



Fuel tank cap loose, damaged or missing, or vacuum line is off
 
EVAP purge solenoid is damaged or has failed
 
EVAP emission canister clogged or restricted
 
TSB 00-060 (7/00) contains information related to this code
 

Trouble Code: P0443



EVAP Canister Purge Solenoid Circuit Malfunction

Possible Causes:



Purge solenoid control circuit open, shorted to ground or power
 
Purge solenoid is shorted to system power (B+)
 
Purge solenoid is damaged or has failed
 
PCM has failed
 
TSB 00-060 (7/00) contains information related to this code
 

Trouble Code: P0446



EVAP Vent Control Solenoid Circuit Malfunction

Possible Causes:



Vent solenoid circuit open, shorted to ground or to power (B+)
 
Vent control solenoid is damaged or has failed
 
PCM has failed
 
TSB 00-060 (7/00) contains information related to this code
 

Trouble Code: P0450



EVAP Pressure Sensor Circuit Malfunction

Possible Causes:



EVAP pressure sensor circuit is open or shorted to ground
 
EVAP pressure sensor circuit is shorted to VREF or power (B+)
 
EVAP pressure sensor is damaged or has failed
 
PCM is damaged
 
TSB 00-060 (7/00) contains information related to this code
 

Trouble Code: P0455



EVAP System Gross Leak (0.080") Detected

Possible Causes:



Fuel tank cap is loose or damaged, or vacuum line is loose
 
EVAP purge solenoid is damaged or has failed
 
EVAP emission canister clogged or restricted
 
TSB 00-060 (7/00) contains information related to this code
 

Trouble Code: P0460



Fuel Level Sensor Slosh

Possible Causes:



Fuel level sensor signal open or shorted to ground (intermittent)
 
Fuel level sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0461



Fuel Level Sensor Performance

Possible Causes:



Fuel level sensor signal open or shorted to ground
 
Fuel level sensor is damaged (stuck) or has failed
 
PCM has failed
 

Trouble Code: P0464



Fuel Level Sensor Circuit Malfunction

Possible Causes:



Fuel level sensor signal circuit is open or shorted to ground
 
Fuel level sensor signal circuit shorted to VREF or power (B+)
 
Fuel level sensor is damaged or has failed
 
PCM is damaged
 

Trouble Code: P0500



Vehicle Speed Sensor Circuit Malfunction

Possible Causes:



VSS signal circuit is open or shorted to ground
 
VSS signal circuit is shorted to VREF or system power (B+)
 
VSS is damaged or has failed
 
PCM has failed
 

Trouble Code: P0505



Idle Air Control, Auxiliary Air Control Valve Circuit Malfunction

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 signal circuit is open or grounded
 
Closed throttle position switch signal circuit is shorted to power
 
Closed throttle position switch or TP sensor damaged or failed
 
PCM has failed
 

Trouble Code: P1108



Manifold Absolute Pressure Sensor Circuit Malfunction

Possible Causes:



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

Trouble Code: P1110



Intake Valve Timing Control Performance

Possible Causes:



Intake valve timing control position sensor or its circuit is open
 
Intake valve timing position control sensor is damaged or failed
 
Signal pickup portion of camshaft is contaminated with debris
 

Trouble Code: P1111



Intake Valve Timing Control Circuit Malfunction

Possible Causes:



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

Trouble Code: P1126



Thermostat Malfunction (Stuck Open)

Possible Causes:



Inspect for low coolant level
 
Inspect for incorrect coolant mixture
 
Check the operation of the thermostat (it may be stuck open)
 

Trouble Code: P1132



Swirl Control Valve Circuit Malfunction

Possible Causes:



Swirl Control valve control circuit is open or shorted
 
Swirl Control valve control circuit is shorted to system power
 
Swirl Control valve is damaged or has failed
 
PCM has failed
 

Trouble Code: P1137



Swirl Control Valve Control Position Sensor Circuit Malfunction

Possible Causes:



Swirl Control valve control position sensor open or shorted
 
Swirl Control valve control position sensor is damaged
 
Swirl Control valve control position sensor has failed
 
PCM has failed
 

Trouble Code: P1138



Swirl Control Valve Control Performance

Possible Causes:



Swirl Control valve circuit is open or shorted (intermittent fault)
 
Swirl Control valve is contaminated, damaged or has failed
 
PCM has failed
 

Trouble Code: P1140



Intake Valve Timing Control Position Sensor Circuit Malfunction (Bank 1)

Possible Causes:



Intake valve timing control position sensor open or shorted
 
Intake valve timing control position sensor is damaged
 
Intake valve timing control position sensor has failed
 
PCM has failed
 

Trouble Code: P1148



Closed Loop Malfunction Detected (Bank 1)

Possible Causes:



A/FS or HO2S signal circuit is open or shorted to ground
 
A/FS or HO2S heater is damaged or has failed
 
A/FS or HO2S is damaged, contaminated or has failed
 
PCM has failed
 

Trouble Code: P1168



Closed Loop Malfunction Detected (Bank 2)

Possible Causes:



A/FS or HO2S signal circuit is open or shorted to ground
 
A/FS or HO2S heater is damaged or has failed
 
A/FS or HO2S is damaged, contaminated or has failed
 
PCM has failed
 

Trouble Code: P1217



Engine Over-Temperature Condition

Possible Causes:



Engine coolant low or an incorrect coolant mixture exists
 
Engine cooling fan circuit(s) open or shorted to ground
 
Engine cooling fan is damaged or has failed
 
Check cooling system components (radiator hose, cap, etc.)
 
Check the thermostat operation (it may be stuck partly closed)
 

Trouble Code: P1271



A/F Sensor-11 (Bank 1 Sensor 1) Circuit Malfunction

Possible Causes:



Air Fuel Sensor (AFS) signal circuit is open
 
Air Fuel Sensor (AFS) signal circuit is shorted to ground
 
Air Fuel Sensor (AFS) is damaged or has failed
 
PCM had failed
 

Trouble Code: P1272



Air Fuel Sensor (Bank 1 Sensor 1) High Input

Possible Causes:



Air Fuel Sensor (AFS) signal circuit is open
 
Air Fuel Sensor (AFS) signal circuit is shorted to VREF
 
Air Fuel Sensor (AFS) signal circuit is shorted to power (B+)
 
Air Fuel Sensor (AFS) is damaged or has failed
 

Trouble Code: P1273



Air Fuel Sensor (Bank 1 Sensor 1) Circuit Lean Shift

Possible Causes:



Air Fuel Sensor (AFS) is damaged or has failed
 
Air Fuel Sensor (AFS) heater is damaged or has failed
 
Intake air leaks somewhere in the engine or intake area
 
Fuel system problem (low fuel pressure, restricted injectors)
 

Trouble Code: P1274



Air Fuel Sensor (Bank 1 Sensor 1) Circuit Rich Shift

Possible Causes:



Air Fuel Sensor (AFS) is damaged or has failed
 
Air Fuel Sensor (AFS) heater is damaged or has failed
 
Intake air leaks somewhere in the engine or intake area
 
Fuel system problem (low fuel pressure, restricted injectors)
 

Trouble Code: P1275



Air Fuel Sensor (Bank 1 Sensor 1) Slow Response

Possible Causes:



Air Fuel Sensor (AFS) is damaged or has failed
 
Air Fuel Sensor (AFS) heater is damaged or has failed
 
Fuel system problem (high fuel pressure, leaking injectors)
 
PCM has failed
 

Trouble Code: P1276



Air Fuel Sensor (B1 S1) Lack Of Activity Detected

Possible Causes:



Air leaks after the MAF sensor, or leaks in the PCV system
 
Air Fuel Sensor (AFS) or its heater is damaged or has failed
 
Fuel system not supplying enough fuel under high fuel demand conditions (i.e., fuel pump weak, fuel filter or fuel injectors dirty)
 
Air leaks at the EGR valve or in the Intake Manifold area
 
Exhaust system leaks before or near the AFS1 location
 

Trouble Code: P1277



Air Fuel Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction

Possible Causes:



Air Fuel Sensor heater control circuit is open
 
Air Fuel Sensor heater control circuit is shorted to ground
 
Air Fuel Sensor (AFS) heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P1320



Ignition Control Signal Circuit Malfunction

Possible Causes:



Ignition coil primary circuit is open or shorted
 
Ignition coil condenser is shorted
 
CKP sensor signal is erratic or missing
 
CMP sensor signal is erratic or missing
 
CKP sensor or CMP sensor is damaged or has failed
 
TSB 01-159 (6/01) contains information related to this code
 

Trouble Code: P1335



Crankshaft Position Reference Sensor Circuit Malfunction

Possible Causes:



CKP reference signal circuit is open or shorted to ground
 
CKP reference sensor is damaged or has failed
 
Starter motor or starter motor circuit is damaged (not working)
 

Trouble Code: P1336



Crankshaft Position Sensor Circuit Malfunction

Possible Causes:



CKP POS signal circuit is open or shorted to ground
 
Engine flywheel or drive plate gear tooth is chipped or damaged
 
Crankshaft position (POS) sensor is damaged or has failed
 

Trouble Code: P1400



EGR Control Solenoid Circuit Malfunction

Possible Causes:



EGRC solenoid control circuit is open or shorted to ground
 
EGRC solenoid control circuit is shorted to system power (B+)
 
EGRC solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P1401



EGR Temperature Sensor Circuit Malfunction

Possible Causes:



EGR temperature sensor signal circuit open/shorted to ground
 
EGR temperature sensor signal circuit shorted to VREF
 
EGR temperature sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1402



EGR System Malfunction Detected (Open)

Possible Causes:



EGR valve seat leaking or EGR valve stuck in open position
 
EGRC solenoid is damaged or has failed
 
EGR temperature sensor is damaged or has failed
 
EGRC-BPT valve is damaged or has failed
 

Trouble Code: P1440



EVAP Canister System Small Leak (0.040) Detected

Possible Causes:



Absolute pressure sensor is damaged or has failed
 
EVAP canister vent valve is damaged or contaminated
 
EVAP system leaks (in canister or related vapor lines)
 
EVAP control system vapor pressure sensor line is blocked
 
Fuel filler cap loose, damaged or incorrect application
 
Fuel tank temperature sensor is damaged or has failed
 
MAP/BARO switch solenoid valve is damaged or has failed
 
MAP/BARO switch solenoid vacuum line is blocked or bent
 

Trouble Code: P1441



EVAP Control System Very Small Leak (0.020") Detected

Possible Causes:



Absolute pressure sensor is damaged or out-of-calibration
 
Blocked or bent EVAP purge line rubber tube
 
Blocked rubber tube to the Control System Pressure Regulator
 
Canister Vent Control valve O-ring is missing or damaged
 
Canister Purge valve is damaged, leaking or has failed
 
Charcoal canister is loaded with fuel or it contains moisture
 
Control System Pressure sensor is damaged or has failed
 
Dirt or debris caught in the Canister Vent Control valve
 
Fuel filler cap loose, cross-threaded, incorrect part or damaged
 
Fuel level sensor is damaged or out-of-calibration
 
Fuel tank is cracked (leaking), or a leak exists in the 'O' ring
 
Fuel tank pressure sensor is damaged or has failed
 
Fuel vapor line(s), fuel pipes or hoses damaged or leaking
 
Incorrect Fuel Tank Vacuum Relief valve
 
Leaks in the EVAP canister or related hoses, or in the fuel tank
 
Leaks present in the system between the intake manifold and the Canister Purge Volume Control solenoid valve
 
Leaks present somewhere in the ORVR system components
 
Problems in the Canister Vent Control solenoid or its circuit
 
Problems related to the water separator valve
 
Refueling Control Valve is damaged, sticking or has failed
 
PCM has failed
 

Trouble Code: P1444



Canister Purge Volume Control Valve Circuit Malfunction

Possible Causes:



EVAP control system pressure sensor is damaged or has failed
 
EVAP purge volume control valve is stuck open
 
EVAP canister vent control valve is damaged or has failed
 
EVAP canister is damaged, or hoses are connected incorrectly
 

Trouble Code: P1446



EVAP Canister Vent Valve Malfunction (Closed)

Possible Causes:



Charcoal canister is saturated with fuel or moisture
 
Control system pressure sensor is damaged or has failed
 
Canister vent control valve is damaged or has failed
 
Canister vent control valve rubber tube is blocked/bent
 
Water separator is damaged or has failed
 
PCM has failed
 

Trouble Code: P1447



EVAP Control System Purge Flow Malfunction

Possible Causes:



EVAP canister purge volume control valve stuck closed
 
EVAP canister purge control valve stuck closed
 
EVAP control pressure sensor is damaged or has failed
 
EVAP canister vent control valve is damaged or has failed
 
EVAP rubber tube is blocked, disconnected or bent
 
EVAP canister purge control solenoid is damaged or has failed
 
MAP/BARO switch solenoid vacuum line is blocked or bent
 
EVAP canister is leaking (it may be cracked)
 
EVAP 1-way valve connected improperly or purge port blocked
 

 
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