EOBD codes starting with P0500 to P0599

Trouble code = P0500
Fault location = Vehicle speed sensor (VSS) - circuit malfunction
Probable cause = Wiring, VSS, ECM

Trouble code = P0501
Fault location = Vehicle speed sensor (VSS) - range/performance problem
Probable cause = Wiring, speedometer, VSS, CAN data bus

Trouble code = P0502
Fault location = Vehicle speed sensor (VSS) - low input
Probable cause = Wiring short to earth, VSS, ECM

Trouble code = P0503
Fault location = Vehicle speed sensor (VSS) - intermittent/erratic/high input
Probable cause = Wiring, poor connection, other connected system, instrument panel, VSS

Trouble code = P0504
Fault location = Brake switch - A/B correlation
Probable cause = Wiring, mechanical fault

Trouble code = P0505
Fault location = Idle speed control (ISC) system - malfunction
Probable cause = Wiring, ISC actuator/lAC valve, throttle motor, throttle valve tight/sticking, ECM

Trouble code = P0506
Fault location = Idle speed control (ISC) system - rpm lower than expected
Probable cause = Wiring, ISC actuator/lAC valve, throttle motor, throttle valve tight/sticking, ECM

Trouble code = P0507
Fault location = ldle speed control (ISC) system - rpm higher than expected
Probable cause = Wiring, ISC actuator/lAC valve, throttle motor, throttle valve tight/sticking, ECM

Trouble code = P0508
Fault location = Idle air control (IAC) - circuit low
Probable cause = Wiring short to earth, IAC valve, ECM

Trouble code = P0509
Fault location = Idle air control (IAC) - circuit high
Probable cause = Wiring short to positive, IAC valve, ECM

Trouble code = P0510
Fault location = Closed throttle position (CTP) switch - circuit malfunction
Probable cause = Wiring, CTP switch, ECM

Trouble code = P0511
Fault location = Idle air control (IAC) - circuit malfunction
Probable cause = Wiring, poor connection, IAC valve, ECM

Trouble code = P0512
Fault location = Starter request circuit - malfunction
Probable cause = Wiring, immobilizer system, relay

Trouble code = P0513
Fault location = Incorrect immobilizer key
Probable cause = Immobilizer system

Trouble code = P0514
Fault location = Battery temperature sensor - clrcuit range/performance
Probable cause = Wiring, poor connection, battery temperature sensor

Trouble code = P0515
Fault location = Battery temperature sensor - circuit malfunction
Probable cause = Wiring, poor connection, battery temperature sensor

Trouble code = P0516
Fault location = Battery temperature sensor - circuit low
Probable cause = Wiring short to earth, battery temperature sensor, ECM

Trouble code = P0517
Fault location = Battery temperature sensor - circuit high
Probable cause = Wiring short to positive, battery temperature sensor, ECM

Trouble code = P0518
Fault location = Idle air control (IAC) - circuit intermittent
Probable cause = Wiring, poor connection, IAC valve, ECM

Trouble code = P0519
Fault location = Idle air control (IAC) - circuit performance
Probable cause = Wiring, poor connection, IAC valve, ECM

Trouble code = P0520
Fault location = Engine oil pressure sensor/switch - circuit malfunction
Probable cause = Wiring, engine oil pressure sensorlswitch, ECM

Trouble code = P0521
Fault location = Engine oil pressure sensor/switch - range/performance problem
Probable cause = Engine oil pressure sensor/switch

Trouble code = P0522
Fault location = Engine oil pressure sensor/switch - low voltage
Probable cause = Wiring short to earth, engine oil pressure sensor/switch, ECM

Trouble code = P0523
Fault location = Engme oil pressure sensor/switch - high voltage
Probable cause = Wiring short to positive, engine oil pressure sensor/switch, ECM

Trouble code = P0524
Fault location = Engine oil pressure too low
Probable cause = Mechanical fault

Trouble code = P0525
Fault location = Cruise control system, actuator control - circuit range/performance
Probable cause = Wiring, poor connection, cruise control actuator

Trouble code = P0526
Fault location = Engine coolant blower motor speed sensor - circuit malfunction
Probable cause = Wiring, poor connection, blower motor speed sensor, ECM

Trouble code = P0527
Fault location = Engine coolant blower motor speed sensor - circuit range/performance
Probable cause = Wiring, poor connection, blower motor speed sensor

Trouble code = P0528
Fault location = Engine coolant blower motor speed sensor - no signal
Probable cause = Wiring, poor connection, blower motor speed sensor, ECM

Trouble code = P0529
Fault location = Engine coolant blower motor speed sensor - circuit intermittent
Probable cause = Wiring, poor connection, ECM

Trouble code = P0530
Fault location = AC refrigerant pressure sensor - circuit malfunction
Probable cause = Wiring, AC refrigerant pressure sensor, ECM

Trouble code = P0531
Fault location = AC refrigerant pressure sensor - range/performance problem
Probable cause = AC refrigerant pressure sensor

Trouble code = P0532
Fault location = AC refrigerant pressure sensor - low input
Probable cause = AC refrigerant pressure too low (incorrectly charged), wiring, AC refrigerant pressure sensor, ECM

Trouble code = P0533
Fault location = AC refrigerant pressure sensor - high input
Probable cause = AC refrigerant pressure too high (cooling fault/incorrectly charged), wiring,
AC refrigerant pressure sensor, ECM

Trouble code = P0534
Fault location = AC refrigerant charge loss
Probable cause = AC leak, wiring, AC refrigerant pressure sensor

Trouble code = P0535
Fault location = AC evaporator temperature sensor - circuit malfunction
Probable cause = Wiring, poor connection, AC evaporator temperature sensor, ECM

Trouble code = P0536
Fault location = AC evaporator temperature sensor - circuit range/performance
Probable cause = Wiring, poor connection, AC evaporator temperature sensor, ECM

Trouble code = P0537
Fault location = AC evaporator temperature sensor - circuit low
Probable cause = Wiring short to earth, AC evaporator temperature sensor. ECM

Trouble code = P0538
Fault location = AC evaporator temperature sensor - circuit high
Probable cause = Wiring short to positive, AC evaporator temperature sensor, ECM

Trouble code = P0539
Fault location = AC evaporator temperature sensor - circuit intermittent
Probable cause = Wiring, poor connection, AC evaporator temperature sensor, ECM

Trouble code = P0540
Fault location = lntake air heater A - circuit malfunction
Probable cause = Wiring, relay, intake air heater

Trouble code = P0541
Fault location = lntake air heater A - circuit low
Probable cause = Wiring short to earth, intake air heater

Trouble code = P0542
Fault location = lntake air heater A - circuit high
Probable cause = Wiring short to positive, intake air heater

Trouble code = P0543
Fault location = lntake air heater A - circuit open
Probable cause = Wiring, intake air heater

Trouble code = P0544
Fault location = Exhaust gas recirculation temperature (EGRT) sensor, bank 1 - circuit malfunction
Probable cause = Wiring, EGRT sensor, ECM

Trouble code = P0545
Fault location = Exhaust gas recirculation temperature (EGRT) sensor, bank 1 -low input
Probable cause = Wiring short to earth, EGRT sensor, ECM

Trouble code = P0546
Fault location = Exhaust gas recirculation temperature (EGRT) sensor, bank 1 - high input
Probable cause = Wiring short to positive, EGRT sensor, ECM

Trouble code = P0547
Fault location = Exhaust gas temperature sensor, bank 2 sensor 1 - circuit malfunction
Probable cause = Wiring, poor connection, exhaust gas temperature sensor, ECM

Trouble code = P0548
Fault location = Exhaust gas temperature sensor, bank 2 sensor 1 - circuit low
Probable cause = Wiring short to earth, exhaust gas temperature sensor, ECM

Trouble code = P0549
Fault location = Exhaust gas temperature sensor, bank 2 sensor 1 - circuit high
Probable cause = Wiring short to positive, exhaust gas temperature sensor, ECM

Trouble code = P0550
Fault location = Power steering pressure (PSP) sensorlswitch - circuit malfunction
Probable cause = Wiring, PSP sensor/switch, ECM

Trouble code = P0551
Fault location = Power steering pressure (PSP) sensorlswitch - range/performance problem
Probable cause = PAS system, PSP sensor/switch

Trouble code = P0552
Fault location = Power steering pressure (PSP) sensorlswitch - low input
Probable cause = Wiring short to earth, PSP sensor/switch, ECM

Trouble code = P0553
Fault location = Power steering pressure (PSP) sensor/switch - high inpul
Probable cause = Wiring short to positive, PSP sensor/switch, ECM

Trouble code = P0554
Fault location = Power steering pressure (PSP) sensorlswitch - circuit intermittent
Probable cause = Wiring, poor connection, PSP sensor/switch, ECM

Trouble code = P0555
Fault location = Brake servo pressure sensor - circuit malfunction
Probable cause = Wiring, poor connection, brake servo pressure sensor, ECM

Trouble code = P0556
Fault location = Brake servo pressure sensor - circuit range/performance
Probable cause = Wiring, poor connection, brake servo pressure sensor, ECM

Trouble code = P0557
Fault location = Brake servo pressure sensor - circuit low input
Probable cause = Wiring short to earth, brake servo pressure sensor, ECM

Trouble code = P0558
Fault location = Brake servo pressure sensor - circuit high input
Probable cause = Wiring short to positive, brake servo pressure sensor,ECM

Trouble code = P0559
Fault location = Brake servo pressure sensor - circuit intermittent
Probable cause = Wiring, poor connection, brake servo pressure sensor, ECM

Trouble code = P0560
Fault location = System voltage - malfunction
Probable cause = Wiring, poor connection, battery, alternator

Trouble code = P0561
Fault location = System voltage - unstable
Probable cause = Wiring, poor connection, battery, alternator

Trouble code = P0562
Fault location = System voltage - low
Probable cause = Wiring, poor connection, battery, alternator

Trouble code = P0563
Fault location = System voltage - high
Probable cause = Alternator

Trouble code = P0564
Fault location = Cruise control system, multi-function switch input A - circuit malfunction
Probable cause = Wiring, poor connection, multi-function switch, mechanical fault

Trouble code = P0565
Fault location = Cruise control master switch, ON signal - malfunction
Probable cause = Wiring, cruise control master switch, ECM

Trouble code = P0566
Fault location = Cruise control master switch, OFF signal - malfunction
Probable cause = Wiring, cruise control master switch, ECM

Trouble code = P0567
Fault location = Cruise control selector switch, RESUME signal - malfunction
Probable cause = Wiring, cruise control selector switch, ECM

Trouble code = P0568
Fault location = Cruise control master switch, SET signal - malfunction
Probable cause = Wiring, cruise control master switch, ECM

Trouble code = P0569
Fault location = Cruise control selector switch, COAST signal - malfunction
Probable cause = Wiring, cruise control selector switch, ECM

Trouble code = P0570
Fault location = Cruise control system, APP sensor siynal - malfunction
Probable cause = Wiring, APP sensor, ECM

Trouble code = P0571
Fault location = Cruiselbrake switch A - circuit malfunction
Probable cause = Wiring, cruise/brake switch, ECM

Trouble code = P0572
Fault location = Cruiselbrake switch A - circuit low
Probable cause = Wiring short to earth, cruise/brake switch, ECM

Trouble code = P0573
Fault location = Cruiselbrake switch A - circuit high
Probable cause = Wiring short to positive, cruiselbrake switch, ECM

Trouble code = P0574
Fault location = Cruise control system - vehicle speed too high
Probable cause = Mechanical fault

Trouble code = P0575
Fault location = Cruise control system - input circuit malfunction
Probable cause = Wiring, poor connection, mechanical fault, ECM

Trouble code = P0576
Fault location = Cruise control system - input circuit low
Probable cause = Wiring short to earth

Trouble code = P0577
Fault location = Cruise control system - input circuit high
Probable cause = Wiring short to positive

Trouble code = P0578
Fault location = Cruise control system, multi-function switch input A - circuit stuck
Probable cause = Wiring, poor connection, multi-function switch, mechanical fault

Trouble code = P0579
Fault location = Cruise control system, multi-function switch input A - circuit range/performance
Probable cause = Wiring, poor connection, multi-function switch, mechanical fault

Trouble code = P0580
Fault location = Cruise control system, multi-function switch input A - circuit low
Probable cause = Wiring short to earth, multi-function switch, mechanical fault

Trouble code = P0581
Fault location = Cruise control system, multi-function switch input A - circuit high
Probable cause = Wiring short to positive, multi-function switch, mechanical fault

Trouble code = P0582
Fault location = Cruise control system, vacuum control - circuit open
Probable cause = Wiring, vacuum control solenoid

Trouble code = P0583
Fault location = Cruise control system, vacuum control - circuit low
Probable cause = Wiring short to earth, vacuum control solenoid

Trouble code = P0584
Fault location = Cruise control system, vacuum control - circuit high
Probable cause = Wiring short to positive, vacuum control solenoid

Trouble code = P0585
Fault location = Cruise control system, multi-function switch input AIB - correlation
Probable cause = Mechanical fault

Trouble code = P0586
Fault location = Cruise control system, vent control - circuit open
Probable cause = Wiring, vent control solenoid

Trouble code = P0587
Fault location = Cruise control system, vent control - circuit low
Probable cause = Wiring short to earth, vent control solenoid

Trouble code = P0588
Fault location = Cruise control system, vent control - circuit high
Probable cause = Wiring short to positive, vent control solenoid

Trouble code = P0589
Fault location = Cruise control system, multi-function switch input B - circuit malfunction
Probable cause = Wiring, poor connection, multi-function switch, mechanical fault

Trouble code = P0590
Fault location = Cruise control system, multi-function switch input B - circuit stuck
Probable cause = Wiring, poor connection, multi-function switch, mechanical fault

Trouble code = P0591
Fault location = Cruise control system, multi-function switch input B - circuit range/performance
Probable cause = Wiring, poor connection, multi-function switch mechanical fault

Trouble code = P0592
Fault location = Cruise control system, multi-function switch input B - circuit low
Probable cause = Wiring short to earth, multi-function switch, mechanical fault

Trouble code = P0593
Fault location = Cruise control system, multi-function switch input B - circuit high
Probable cause = Wiring short to positive, multi-function switch, mechanical fault

Trouble code = P0594
Fault location = Cruise control system, actuator control - circuit open
Probable cause = Wiring, actuator

Trouble code = P0595
Fault location = Cruise control system, actuator control - circuit low
Probable cause = Wiring short to earth, actuator

Trouble code = P0596
Fault location = Cruise control system, actuator control - circuit high
Probable cause = Wiring short to positive, actuator

Trouble code = P0597
Fault location = Thermostat heater control system - circuit open
Probable cause = Wiring, relay, thermostat heater

Trouble code = P0598
Fault location = Thermostat heater control system - circuit low
Probable cause = Wiring short to earth, relay, thermostat heater

Trouble code = P0599
Fault location = Thermostat heater control system - circuit high
Probable cause = Wiring short to positive, relay, thermostat heater
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