Pacifica 2006-2008

3.8L V6 VIN L Auto 5

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Trouble Code: P0441



EVAP Purge System Performance

Possible Causes:



Intermittent condition
 
EVAP purge solenoid functioning improperly
 
EVAP purge solenoid vacuum supply leaking or clogged
 

Trouble Code: P0442



EVAP SYSTEM MEDIUM LEAK

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
LEAK AT GAS CAP
 
VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
 
VISUAL AND PHYSICAL INSPECTION
 
VERIFY EVAPORATIVE EMISSION SYSTEM LEAK
 
EVAP PURGE SOLENOID OPERATION
 
EVAPORATIVE EMISSION LEAK DETECTION
 
GAS CAP
 
NVLD
 

Trouble Code: P0442



EVAP System Medium Leak Detected

Possible Causes:



Intermittent condition
 
Vacuum hoses, connections or switches have come loose or malfunctioned
 
EVAP emission system has a leak
 
EVAP purge solenoid operation has malfunctioned
 
NVLD switch operation has malfunctioned
 

Trouble Code: P0443



EVAP PURGE SOLENOID CIRCUIT

Possible Causes:



VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
 
GOOD TRIP EQUAL TO ZERO
 
EVAP PURGE SOLENOID OPERATION
 
(K52) EVAP PURGE SOL CONTROL CIRCUIT OPEN
 
(K52) EVAP PURGE SOLENOID CONTROL CIRCUIT SHORTED TO GROUND
 
(K108) EVAP PURGE SOL RETURN CIRCUIT OPEN
 
(K108) EVAP PURGE SOL RETURN CIRCUIT SHORTED TO GROUND
 
(K108) EVAP PURGE SOL SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
 
POWERTRAIN CONTROL MODULE
 

Trouble Code: P0443



EVAP Purge Solenoid Circuit Fault

Possible Causes:



EVAP purge solenoid control circuit open or shorted to ground
 
EVAP purge solenoid return circuit open or shorted to ground
 
EVAP purge solenoid is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0445



EVAP System Large Leak Detected

Possible Causes:



Intermittent condition
 
Vacuum hoses, connections or switches have come loose or malfunctioned
 
EVAP emission system has a leak
 
EVAP purge solenoid operation has malfunctioned
 
NVLD switch operation has malfunctioned
 

Trouble Code: P0452



NVLD PRESSURE SWITCH SENSE CIRCUIT LOW

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
 
EVAP PURGE SOLENOID LEAKS/STUCK OPEN
 
NVLD SWITCH OPERATION
 
NVLD ASSEMBLY
 
(K107) NVLD SWITCH SIGNAL CIRCUIT SHORTED TO GROUND
 
PCM
 

Trouble Code: P0452



NVLD Pressure Switch Sense Circuit Low Input

Possible Causes:



EVAP purge solenoid control circuit is shorted to ground
 
EVAP purge solenoid is leaking or it is stuck in open position
 
NVLD assembly or NVLD switch is damaged or it has failed
 
NVLD switch signal circuit is shorted to ground
 
PCM has failed
 

Trouble Code: P0453



NVLD PRESSURE SWITCH SENSE CIRCUIT HIGH

Possible Causes:



NVLD SWITCH OPERATION
 
VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
 
NVLD ASSEMBLY
 
(K107) NVLD SWITCH SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
 
(K107) NVLD SWITCH SIGNAL CIRCUIT OPEN
 
(K107) NVLD SWITCH SIGNAL CIRCUIT SHORTED TO THE (K106) SOLENOID CONTROL CIR-
 
CUIT
 
(Z201) GROUND CIRCUIT OPEN
 
PCM
 

Trouble Code: P0453



NVLD Pressure Switch Sense Circuit High Input

Possible Causes:



NVLD assembly ground circuit is open
 
NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit
 
NVLD assembly or switch is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0455



EVAP SYSTEM LARGE LEAK

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
LEAK AT GAS CAP
 
VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
 
VISUAL AND PHYSICAL INSPECTION
 
VERIFY EVAPORATIVE EMISSION SYSTEM LEAK
 
EVAP PURGE SOLENOID OPERATION
 
EVAPORATIVE EMISSION LEAK DETECTION
 
GAS CAP
 
NVLD
 

Trouble Code: P0455



EVAP Large Leak Detected

Possible Causes:



EVAP purge solenoid is damaged or it has failed
 
Fuel tank cap is damaged, missing or the wrong part number
 
NVLD switch is damaged or it has failed
 

Trouble Code: P0456



EVAP SYSTEM SMALL LEAK

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
 
VISUAL AND PHYSICAL INSPECTION
 
VERIFY EVAPORATIVE EMISSION SYSTEM LEAK
 
EVAP PURGE SOLENOID OPERATION
 
EVAPORATIVE EMISSION LEAK DETECTION
 
GAS CAP
 
NVLD
 

Trouble Code: P0456



EVAP System Small Leak Detected

Possible Causes:



Fuel tank cap is damaged, loose or the wrong part number
 
Small leak present somewhere in the EVAP system
 

Trouble Code: P0457



LOOSE FUEL CAP

Possible Causes:



LOOSE OR MISSING FUEL CAP
 

Trouble Code: P0457



Loose Fuel Cap Condition:

Possible Causes:



Loose or missing fuel fill cap
 
Intermittent condition
 
NVLD system or switch malfunction
 
EVAP system leaking
 
EVAP purge solenoid malfunction
 

Trouble Code: P0461



FUEL LEVEL SENSOR #1 PERFORMANCE

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
VISUALLY INSPECT FUEL TANK
 
FUEL LEVEL SIGNAL CIRCUIT SHORTED TO GROUND
 
FUEL LEVEL SIGNAL CIRCUIT OPEN
 
GROUND CIRCUIT OPEN
 
INTERNAL INSPECTION OF THE FUEL TANK AND SIPHON HOSE
 
FUEL LEVEL SENSOR
 

Trouble Code: P0462



FUEL LEVEL SENSOR #1 LOW

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
INTERMITTENT CONDITION
 

Trouble Code: P0462



Fuel Level Sensor No. 1 Low Input

Possible Causes:



Intermittent condition
 
Fuel level sending unit signal circuit shorted to Sensor or chassis ground
 
Fuel level sensing unit is damaged or the fuel tank is damaged
 
Instrument cluster problem
 

Trouble Code: P0463



FUEL LEVEL SENSOR #1 HIGH

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
INTERMITTENT CONDITION
 

Trouble Code: P0463



Fuel Level Sensor No. 1 High Input

Possible Causes:



Fuel level sending unit signal circuit is open or is shorted to battery voltage
 
Fuel level Sensor ground circuit is open
 
Fuel level Sensor is damaged or the fuel tank is damaged
 
Instrument cluster is faulty
 
BCM or PCM has failed
 

Trouble Code: P0480



COOLING FAN 1 CONTROL CIRCUIT

Possible Causes:



RADIATOR FAN RELAY INTERMITTENT OPERATION
 
INTERMITTENT CONDITION
 
(Z723) GROUND CIRCUIT
 
(A112) FUSED B+ OUTPUT CIRCUIT
 
POWERTRAIN CONTROL MODULE
 
(K173) RADIATOR FAN RELAY CONTROL CIRCUIT OPEN
 
(K173) RADIATOR FAN RELAY CONTROL CIRCUIT SHORT TO BATTERY VOLTAGE
 
(K173) RADIATOR FAN RELAY CONTROL CIRCUIT SHORT TO GROUND
 
RADIATOR FAN RELAY
 

Trouble Code: P0480



Low Speed (No.1) Fan Control Relay Circuit

Possible Causes:



Fan relay intermittent condition
 
Ground circuit is open
 
Fused B+ output circuit malfunction
 
Fan relay control circuit is open or shorted to battery voltage or ground
 
Fan relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P0481



High Speed (No. 2) Fan Relay Control Circuit

Possible Causes:



HFAN relay power circuit is open from the relay to fused power
 
HFAN relay control circuit is open or shorted to chassis ground
 
Fan relay(s) failed
 
PCM has failed.
 

Trouble Code: P0498



NVLD CANISTER VENT VALVE SOLENOID CIRCUIT LOW

Possible Causes:



VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
 
GOOD TRIP EQUAL TO ZERO
 
NVLD SOLENOID
 
(K106) NVLD SOLENOID CONTROL CIRCUIT SHORT TO GROUND
 
PCM
 

Trouble Code: P0498



NVLD Canister Vent Solenoid Circuit Low

Possible Causes:



NVLD canister vent solenoid control circuit is shorted to ground
 
NVLD canister vent solenoid is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0499



NVLD CANISTER VENT VALVE SOLENOID CIRCUIT HIGH

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
VEHICLE HISTORY AND SERVICE BULLETIN INVESTIGATION
 
NVLD SOLENOID
 
(K106) NVLD SOL CONTROL CIRCUIT SHORT TO BATTERY VOLTAGE
 
(K106) NVLD SOL CONTROL CIRCUIT OPEN
 
(Z1) GROUND CIRCUIT OPEN
 
PCM
 

Trouble Code: P0499



NVLD Canister Vent Solenoid Circuit High

Possible Causes:



NVLD canister vent solenoid control circuit is open or is shorted to power
 
NVLD canister vent solenoid ground circuit is open
 
NVLD canister vent solenoid is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0501



VEHICLE SPEED SENSOR #1 PERFORMANCE

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
TRANSMISSION DTC(S)
 
PCM
 

Trouble Code: P0501



Vehicle Speed Sensor Performance

Possible Causes:



Check for any ABS/RWAL or TCM codes related to the VSS
 
VSS connector is damaged, open or it is shorted
 
VSS signal is open, shorted to ground or shorted to power
 
Incorrect tire circumference
 
ABS/RWAL controller, BCM, ECM, TCM or PCM has failed
 

Trouble Code: P0503



Vehicle Speed Sensor No. 1 Erratic Performance

Possible Causes:



Check for active Bus or Communication DTCs
 
Incorrect Tire Circumference
 
PCM has failed
 

Trouble Code: P0506



IDLE SPEED LOW PERFORMANCE

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
PCV SYSTEM
 
IAC MOTOR PASSAGES
 
VACUUM LEAKS
 
AIR INDUCTION SYSTEM
 
THROTTLE BODY AND THROTTLE LINKAGE
 

Trouble Code: P0506



Idle Speed Low Performance

Possible Causes:



PCV system malfunction
 
Air induction system restrictions (clogged air filter, etc.)
 
Idle air control passage is clogged or dirty (clean and retest)
 
Air induction system malfunction
 
Throttle body or linkage is binding, damaged or sticking
 

Trouble Code: P0507



IDLE SPEED HIGH PERFORMANCE

Possible Causes:



GOOD TRIP EQUAL TO ZERO
 
PCV SYSTEM
 
IAC MOTOR PASSAGES
 
VACUUM LEAKS
 
AIR INDUCTION SYSTEM
 
THROTTLE BODY AND THROTTLE LINKAGE
 

Trouble Code: P0507



Idle Speed High Performance

Possible Causes:



PCV system malfunction
 
Air induction system restrictions (clogged air filter, etc.)
 
Idle air control passage is clogged or dirty (clean and retest)
 
Air induction system malfunction
 
Throttle body or linkage is binding, damaged or sticking
 

Trouble Code: P0508



IAC VALVE SENSE CIRCUIT LOW

Possible Causes:



IAC MOTOR OPERATION
 
IAC MOTOR
 
(K61) IAC MOTOR CONTROL CIRCUIT SHORTED TO GROUND
 
(K961) IAC RETURN CIRCUIT OPEN
 
(K961) IAC RETURN CIRCUIT SHORTED TO GROUND
 
(K61) IAC MOTOR CONTROL CIRCUIT OPEN
 
PCM
 

Trouble Code: P0508



Idle Air Control Motor Sense Circuit Low Input

Possible Causes:



IAC motor driver circuit is open or shorted to ground
 
IAC motor sense circuit is open or shorted to ground
 
IAC motor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P0509



IAC VALVE SENSE CIRCUIT HIGH

Possible Causes:



IAC MOTOR OPERATION
 
IAC MOTOR
 
(K961) IAC RETURN CIRCUIT SHORTED TO VOLTAGE
 
(K61) IAC MOTOR CONTROL CIRCUIT SHORTED TO VOLTAGE
 
(K961) IAC RETURN CIRCUIT SHORTED TO (K61) IAC MOTOR CONTROL CIRCUIT
 
PCM
 

Trouble Code: P0509



Idle Air Control Motor Circuit High

Possible Causes:



IAC motor driver circuit is shorted to power
 
IAC motor sense circuit is shorted to power
 
IAC motor is damaged or it has failed
 
PCM has failed
 

Trouble Code: P050B



Cold Start Ignition Timing Performance

Possible Causes:



Restricted intake air system
 
Low battery voltage
 
Fuel contamination
 
Excessive resistance in the ETC motor
 
Throttle body
 
PCM has failed
 

 
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