Idle and auxiliary systems
Idle, vehicle speed, cruise control and auxiliary systems. This is also where P1000 lives — the readiness code, which is not a fault at all.
22 codes in this section, 22 with a guide
What it usually turns out to be
- Hunting idle is more often an air leak or a dirty throttle body than a failed unit.
- Cruise control will not engage and the gearbox will not leave Park — look at the stop-light switch.
- P1000 in this group is not a fault at all but incomplete self-tests.
P0480Cooling fan 1 control circuit malfunctionguideP0500Vehicle speed sensor malfunctionguideP0501Vehicle speed sensor — reading out of rangeguideP0502Vehicle speed sensor — low signalguideP0504Brake switch — signal mismatchguideP0505Idle air control system malfunctionguideP0506Idle speed lower than expectedguideP0507Idle speed higher than expectedguideP0508Idle air control — low signalguideP050ACold start idle control system performanceguideP0513Immobiliser — invalid keyguideP0520Engine oil pressure sensor circuit malfunctionguideP0521Oil pressure sensor — reading out of rangeguideP0522Oil pressure sensor — low signalguideP0523Oil pressure sensor — high signalguideP0524Engine oil pressure too lowguideP0544Exhaust gas temperature sensor (bank 1) — circuit malfunctionguideP0560System voltage — malfunctionguideP0561System voltage unstableguideP0562System voltage lowguideP0563System voltage highguideP0571Brake switch circuit malfunctionguide
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Other sections
Fuel and air metering, general 33Intake measuring sensors 17Oxygen sensors 19Throttle and accelerator pedal 15Mixture: lean and rich 11Fuel and air metering: injectors 25Ignition system and misfires 29Exhaust gas recirculation (EGR) 7Secondary air injection 3Catalytic converter 4Canister and purge valves 9Fuel vapour leaks 7Fuel level in the tank 4Diesel particulate filter 6Control module and its circuits 21Transmission 17Communication between modules 20Brakes, ABS and stability control 17Body, airbags and lighting 12