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    2007 Pontiac Grand Prix 3.8L SFI OHV 6cyl

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    Mustang 2006-2008

    5.4L V8 VIN S Std 5

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    Trouble Code: P0480



    Fan 1 Control Circuit (Variable Speed Electric Cooling Fan)

    Possible Causes:



    FCV circuit open or short
     
    B+ or ground circuit concern to cooling fan
     
    VPWR open to cooling fan (if applicable)
     
    Damaged cooling fan module
     

    Trouble Code: P0480



    Fan 1 Control Circuit (Cooling Fan Clutch)

    Possible Causes:



    FCV circuit open in the harness
     
    FCV circuit short to voltage or ground in the harness
     
    Damaged cooling fan clutch solenoid
     

    Trouble Code: P0481



    Fan 2 Control Circuit

    Possible Causes:



    Open or short HFC circuit
     
    Open VPWR circuit to the high speed FC relay
     
    Damaged high speed FC relay
     

    Trouble Code: P0482



    Fan 3 Control Circuit

    Possible Causes:



    Open or short MFC circuit
     
    Open IGN START/RUN circuit to the medium speed FC relay
     
    Damaged medium speed FC relay
     

    Trouble Code: P0483



    Electronic Fan Clutch Performance

    Possible Causes:



    Cooling fan motor mechanical concerns
     
    Obstruction or binding conditions
     

    Trouble Code: P0483



    Electrical Fan Performance

    Possible Causes:



    Cooling fan motor mechanical concerns
     
    Obstruction or binding conditions
     
    Overheated controller
     

    Trouble Code: P0491



    Secondary Air Injection (AIR) System Insufficient Flow (Bank 1)

    Possible Causes:



    Secondary AIR pump with no or low air flow.
     
    Secondary AIR by-pass solenoid leaking/blocked or stuck open/closed.
     
    Secondary AIR diverter valve leaking/blocked or stuck open/closed.
     
    Secondary AIR air hose restricted.
     
    Secondary AIR vacuum hoes restricted or leaking.
     

    Trouble Code: P0500



    Vehicle Speed Sensor (VSS) A

    Possible Causes:



    VSC positive signal circuit is open or shorted to ground
     
    VSC negative signal circuit is open
     
    RABS or 4WABS control unit is damaged or has failed
     
    One of the other modules (CTM or GEM) may be the cause of this trouble code. Diagnose other codes from these modules.
     

    Trouble Code: P0505



    Idle Air Control (IAC) System (Vehicles With IAC Valve)

    Possible Causes:



    IAC circuit open
     
    VPWR to IAC solenoid open
     
    B+ or VPWR to IAC solenoid open
     
    Air inlet is plugged
     
    IAC circuit shorted to PWR
     
    Damaged IAC valve
     

    Trouble Code: P0505



    Idle Air Control (IAC) System (Vehicles Without IAC Valve)

    Possible Causes:



    Failure Mode Effects Management (FMEM) condition is present
     
    Intake air restriction
     
    Exhaust restriction
     
    Sludged throttle body
     
    Vacuum leaks
     
    Damaged Electronic Throttle Body (ETB)
     
    PCM has failed
     

    Trouble Code: P0506



    Idle Air Control (IAC) System RPM Lower Than Expected (Vehicles With IAC Valve)

    Possible Causes:



    IAC circuit open
     
    Air inlet is plugged
     
    B+ or VPWR to IAC solenoid open
     
    Damaged or incorrect IAC valve
     
    IAC valve stuck closed
     
    VPWR to IAC solenoid open
     
    IAC circuit shorted to PWR
     

    Trouble Code: P0506



    Idle Air Control (IAC) System RPM Lower Than Expected (Vehicles Without IAC Valve)

    Possible Causes:



    Intake air restriction
     
    Vacuum leaks
     
    Exhaust restriction
     
    Sludged throttle body
     
    Vacuum leaks
     
    Damaged Electronic Throttle Body (ETB)
     
    PCM has failed
     

    Trouble Code: P0507



    Idle Air Control (IAC) System RPM Higher Than Expected (Vehicles With IAC Valve)

    Possible Causes:



    IAC circuit shorted to ground
     
    Damaged or incorrect IAC valve
     
    IAC valve stuck open
     
    Intake air leak after throttle body
     
    Vacuum leaks
     
    Damaged EVAP system
     
    PCM has failed
     

    Trouble Code: P0507



    Idle Air Control (IAC) System RPM Higher Than Expected (Vehicles Without IAC Valve)

    Possible Causes:



    Intake air leak after throttle body
     
    Vacuum leaks
     
    Damaged EVAP system
     
    EGR valve leaks vacuum
     
    Damaged Electronic Throttle Body (ETB)
     
    Damaged EVAP system
     
    PCM has failed
     

    Trouble Code: P050A



    Cold Start Idle Air Control Performance

    Possible Causes:



    Damaged intake air system tubes
     
    Restricted air filter
     
    Restricted or blocked idle air control or intake passages
     
    Air or vacuum leaks
     
    Base engine problem
     

    Trouble Code: P050B



    Cold Start Ignition Timing Performance

    Possible Causes:



    Spark timing
     
    Spark capture circuit
     
    Spark timing monitor
     
    Spark capture circuit monitor
     

    Trouble Code: P050E



    Cold Start Engine Exhaust Temperature Out of Range

    Possible Causes:



    IAC circuit open
     
    VPWR to IAC solenoid open
     
    B+ or VPWR to IAC solenoid open
     
    IAC circuit shorted to PWR
     
    Damaged IAC valve
     

    Trouble Code: P0511



    Idle Air Control (IAC) Circuit

    Possible Causes:



    IAC circuit open
     
    VPWR to IAC solenoid open
     
    B+ or VPWR to IAC solenoid open
     
    IAC circuit shorted to PWR
     
    Damaged IAC valve
     
    IAC circuit short to GND
     

    Trouble Code: P0512



    Starter Request Circuit

    Possible Causes:



    Short to voltage
     
    Ignition switch is faulty
     

    Trouble Code: P0528



    Fan Speed Sensor Circuit No Signal

    Possible Causes:



    FSS VPWR circuit open in the harness
     
    FSS PWRGND circuit open in the harness
     
    FSS circuit open in the harness
     
    FSS circuit short to voltage or ground in the harness
     
    Damaged FSS sensor
     
    PCM has failed
     

    Trouble Code: P052A



    Cold Start Camshaft Position Timing Over-Advanced (Bank 1)

    Possible Causes:



    Camshaft timing incorrectly set
     
    Continuous oil flow to the VCT piston chamber
     
    VCT solenoid valve stuck open
     
    Camshaft advance mechanism binding (VCT unit)
     

    Trouble Code: P052B



    Cold Start Camshaft Position Timing Over-Retarded (Bank 1)

    Possible Causes:



    Camshaft timing incorrectly set
     
    Continuous oil flow to the VCT piston chamber
     
    VCT solenoid valve stuck open
     
    Camshaft advance mechanism binding (VCT unit)
     

    Trouble Code: P052C



    Cold Start Camshaft Position Timing Over-Advanced (Bank 2)

    Possible Causes:



    Camshaft timing incorrectly set
     
    Continuous oil flow to the VCT piston chamber
     
    VCT solenoid valve stuck open
     
    Camshaft advance mechanism binding (VCT unit)
     

    Trouble Code: P052D



    Cold Start Camshaft Position Timing Over-Retarded (Bank 2)

    Possible Causes:



    Camshaft timing incorrectly set
     
    Continuous oil flow to the VCT piston chamber
     
    VCT solenoid valve stuck open
     
    Camshaft advance mechanism binding (VCT unit)
     

    Trouble Code: P0532



    A/C Pressure Refrigerant Sensor A Circuit Low

    Possible Causes:



    ACP transducer sensor circuit short to GND or SIGRTN
     
    VREF circuit open
     
    Open ACP transducer sensor circuit
     
    Damaged ACP transducer sensor
     

    Trouble Code: P0533



    A/C Refrigerant Pressure Sensor A Circuit High

    Possible Causes:



    ACP transducer sensor circuit short to PWR
     
    Open ACP transducer sensor circuit
     
    ACP transducer sensor circuit short to VREF
     
    Damaged ACP transducer sensor
     

    Trouble Code: P0534



    A/C Refrigerant Charge Loss

    Possible Causes:



    Mechanical A/C system concern (such as low refrigerant charge, damaged A/C cycling switch)
     
    Intermittent open between the cycling pressure switch and the Powertrain Control Module (PCM)
     
    Intermittent open in the IGN RUN circuit to cycling pressure switch (if applicable)
     

    Trouble Code: P0537



    A/C Evaporator Temperature Sensor Circuit Low

    Possible Causes:



    ACET circuit short to ground or SIG RTN
     
    Damaged ACET sensor
     

    Trouble Code: P0538



    A/C Evaporator Temperature Sensor Circuit High

    Possible Causes:



    ACET circuit open
     
    SIG RTN circuit open to the ACET sensor
     
    ACET circuit short to voltage (VREF)
     
    Damaged ACET sensor
     

    Trouble Code: P053A



    Positive Crankcase Ventilation (PCV) Heater Control Circuit / Open

    Possible Causes:



    Open or shorted PCV circuit
     
    Damaged PCV heater assembly
     

    Trouble Code: P0552



    Power Steering Pressure (PSP) Sensor/Switch Circuit Low

    Possible Causes:



    PSP sensor damaged
     
    SIG RTN circuit open
     
    VREF circuit open or shorted
     
    PSP sensor signal circuit open or shorted
     

    Trouble Code: P0553



    Power Steering Pressure (PSP) Sensor Circuit High Input

    Possible Causes:



    PSP sensor damaged
     
    VREF circuit shorted to voltage
     
    PSP sensor signal circuit open
     
    PSP sensor signal circuit shorted to voltage
     

    Trouble Code: P0562



    System Voltage Low

    Possible Causes:



    Charging system concern
     
    PCMRC shorted to voltage
     
    Open in the B+ or the IGN START/RUN circuit
     

    Trouble Code: P0563



    System Voltage High

    Possible Causes:



    Charging system concern
     
    PCMRC shorted to voltage
     
    Open in the B+ or the IGN START/RUN circuit
     

    Trouble Code: P0571



    Brake Switch A Circuit

    Possible Causes:



    Open or short in the BPP circuit
     
    Open or short in the stoplamp circuits
     
    Concern in module(s) connected to the BPP circuit
     
    Damaged brake switch
     
    Misadjusted brake switch
     

    Trouble Code: P0572



    Brake Switch A Circuit Low

    Possible Causes:



    Open or short in the BPP circuit
     
    Open or short in the stoplamp circuits
     
    Damaged brake switch
     
    Incorrectly adjusted brake switch
     

    Trouble Code: P0573



    Brake Switch A Circuit High

    Possible Causes:



    Open or short in the BPP circuit
     
    Open or short in the stoplamp circuits
     
    Damaged brake switch
     
    Misadjusted brake switch
     

    Trouble Code: P0579



    Cruise Control Multifunction Input A Circuit Range / Performance

    Possible Causes:



    Wiring, terminals or connectors
     
    PCM not configured for speed control
     
    Stoplamp switch
     
    Speed control deactivator switch (integral to the stoplamp switch)
     
    Speed control switches
     
    Digital Transmission Range (TR) sensor
     
    Vehicle speed signal
     
    ABS module
     
    Park brake
     
    PCM has failed
     

    Trouble Code: P0581



    Cruise Control Multifunction Input A Circuit High

    Possible Causes:



    Wiring, terminals or connectors
     
    PCM not configured for speed control
     
    Stoplamp switch
     
    Speed control deactivator switch (integral to the stoplamp switch)
     
    Speed control switches
     
    Digital Transmission Range (TR) sensor
     
    Vehicle speed signal
     
    ABS module
     
    Park brake
     
    PCM has failed
     

    Trouble Code: P0600



    Serial Communication Link

    Possible Causes:



    Software incompatibility issue
     
    PCM has failed
     

     
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