Nissan Frontier, Xterra 1998-05

3.3L V6 VIN E Auto 3

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Trouble Code: P0444



EVAP Purge Volume Control Solenoid Circuit Low Input

Possible Causes:



Canister purge volume control solenoid connector is damaged
 
Canister purge volume control solenoid circuit is shorted
 
Canister purge volume control solenoid is damaged or failed
 
PCM is damaged or has failed
 

Trouble Code: P0445



EVAP Purge Volume Control Solenoid Circuit High Input

Possible Causes:



Canister purge volume control solenoid connector is damaged
 
Canister purge volume control solenoid circuit is open
 
Canister purge volume control solenoid is damaged or failed
 
PCM is damaged or has failed
 

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: P0447



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: P0452



EVAP System Pressure Sensor Circuit Low Input

Possible Causes:



EVAP pressure sensor circuit connector is damaged (loose)
 
EVAP pressure sensor circuit is shorted to ground
 
EVAP pressure sensor is damaged or has failed
 
PCM is damaged
 

Trouble Code: P0453



EVAP System Pressure Sensor Circuit High Input

Possible Causes:



EVAP pressure sensor circuit connector is damaged (shorted)
 
EVAP pressure sensor circuit is open or shorted to VREF
 
EVAP pressure sensor is damaged or has failed
 
PCM is damaged
 

Trouble Code: P0455



EVAP System Gross Leak (0.080") Detected

Possible Causes:



EVAP control system pressure sensor is damaged or has failed
 
EVAP purge solenoid or canister vacuum line loose or off
 
EVAP purge solenoid is damaged or has failed
 
EVAP emission canister is dirty, restricted or full of water
 
EVAP canister vent control valve is damaged or has failed
 
Fuel tank cap loose, missing or it is the wrong part number
 
Fuel tank temperature sensor is damaged or has failed
 
Fuel tank vacuum relief valve is damaged or has failed
 
Large leak in the EVAP canister or in the fuel tank area
 
ORVR system is damaged or has a large leak in a component
 
Refueling control valve is damaged or has failed
 
Vacuum hose leaking between intake manifold and Purge valve
 

Trouble Code: P0456



EVAP System Very Small Leak (0.020") Detected

Possible Causes:



Canister Purge valve is damaged, leaking or has failed
 
Charcoal canister is loaded with fuel or moisture
 
Fuel filler cap loose, cross-threaded, incorrect part or damaged
 
Fuel tank is cracked (leaking), or a leak exists in the 'O' ring
 
Fuel tank pressure sensor is damaged or has failed
 
Fuel tank overfill check valve is cracked or is damaged
 
Fuel vapor line(s), fuel pipes or hoses damaged or leaking
 
PCM has failed
 

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 Signal Range/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: P0462



Fuel Level Sensor Circuit Low Input

Possible Causes:



Fuel level sensor connector is damaged or loose (intermittent)
 
Fuel level sensor signal is shorted to ground
 
Fuel level sensor is damaged (stuck) or has failed
 

Trouble Code: P0463



Fuel Level Sensor Circuit High Input

Possible Causes:



Fuel level sensor connector is damaged or loose (intermittent)
 
Fuel level sensor signal shorted to ground
 
Fuel level sensor is damaged or 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:



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 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: P0506



Idle Speed Control System RPM Lower Than Expected

Possible Causes:



Air inlet duct is collapsed, loose or air filter element is clogged
 
Base engine problem (i.e., a compression or misfire problem)
 
Idle air inlet passage or throttle bore is dirty or full of deposits
 
Electronic throttle control actuator connector is open
 
Electronic throttle control actuator circuit is open
 
Electronic throttle control actuator is damaged or has failed
 

Trouble Code: P0507



Idle Speed Control System RPM Higher Than Expected

Possible Causes:



Engine vacuum leaks, PCM valve is leaking or the wrong valve
 
Idle air inlet passage or throttle bore is dirty or full of deposits
 
Electronic throttle control actuator connector is shorted
 
Electronic throttle control actuator circuit is shorted
 
Electronic throttle control actuator 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: P0600



TCM (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+)
 
TCM or PCM has failed
 

Trouble Code: P0605



PCM Internal Error

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



A/T Park Neutral Position Switch Circuit Malfunction

Possible Causes:



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, shorted to ground or to VREF
 
TFT sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0720



TCM Revolution Sensor Circuit Malfunction

Possible Causes:



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

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
 

Trouble Code: P0734



A/T Fourth Gear Circuit Malfunction

Possible Causes:



Oil pump is damaged, or the TCC is not operating
 
Shift Solenoid 'B' may be stuck closed
 

Trouble Code: P0740



A/T TCC Solenoid Circuit Malfunction

Possible Causes:



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

Trouble Code: P0744



A/T Servo Valve Solenoid Circuit Malfunction

Possible Causes:



Servo valve solenoid control circuit open or shorted to ground
 
Servo valve solenoid control circuit shorted to system power
 
Servo valve solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0745



A/T Low Pressure Solenoid Circuit Malfunction

Possible Causes:



Low pressure solenoid control circuit open or shorted to ground
 
Low pressure solenoid control circuit shorted to system power
 
Low pressure solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P0746



A/T Pressure Control Solenoid 'A' Circuit Malfunction

Possible Causes:



Line pressure control system is damaged or it has failed
 
Output speed sensor (secondary speed sensor) has failed
 
Input speed sensor (primary speed sensor) has failed
 
TCM has failed
 

Trouble Code: P0750



A/T Shift Solenoid 'A' Circuit Malfunction

Possible Causes:



Shift Solenoid 'A' control circuit open or shorted to ground
 
Shift Solenoid 'A' control circuit shorted to VREF or power (B+)
 
Shift Solenoid 'A' is damaged or has failed
 
PCM has failed
 

Trouble Code: P0755



A/T Shift Solenoid 'B' Circuit Malfunction

Possible Causes:



Shift Solenoid 'B' control circuit open or shorted to ground
 
Shift Solenoid 'B' control circuit shorted to VREF or power (B+)
 
Shift Solenoid 'B' is damaged or has failed
 
PCM has failed
 

Trouble Code: P0776



A/T Shift Solenoid 'A' Circuit Malfunction

Possible Causes:



Shift Solenoid 'A' control circuit open or shorted to ground
 
Shift Solenoid 'A' control circuit shorted to VREF or power (B+)
 
Shift Solenoid 'A' is damaged or has failed
 
PCM has failed
 

Trouble Code: P0840



A/T Transmission Fluid Pressure Solenoid 'A Circuit Malfunction

Possible Causes:



Transmission solenoid 'A' circuit open or shorted to ground
 
Transmission solenoid 'A' circuit open or shorted to power (B+)
 
Transmission solenoid 'A' is damaged or has failed
 
TCM has failed
 

Trouble Code: P0845



A/T Transmission Fluid Pressure Solenoid 'B Circuit Malfunction

Possible Causes:



Transmission solenoid 'B' circuit open or shorted to ground
 
Transmission solenoid 'B' circuit open or shorted to power (B+)
 
Transmission solenoid 'B' is damaged or has failed
 
TCM has failed
 

Trouble Code: P0778



A/T Shift Solenoid 'B' Circuit Malfunction

Possible Causes:



Shift Solenoid 'B' control circuit open or shorted to ground
 
Shift Solenoid 'B' control circuit shorted to VREF or power (B+)
 
Shift Solenoid 'B' is damaged or has failed
 
PCM has failed
 

Trouble Code: P1065



PCM Backup Circuit Malfunction

Possible Causes:



PCM Backup circuit (to battery) is open or shorted to ground
 
Clear the codes and retest for DTC P1065. 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: P1126



Thermostat Malfunction (Stuck Open)

Possible Causes:



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

 
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