VW Golf 3, Vento, Polo - Engine not running true and with high speed | HELLA

VW Golf 3, Vento, Polo

Engine code: AEE, AEX

Model years: 1995-1999

Engine not running true and with high speed

Error code:

533 “Idle regulator system signal faulty”

If the above fault with this error code is detected for this vehicle type, it may be caused by the throttle unit being clogged by carbon deposits.

To clear this fault you should perform the following steps.

  1. Remove the throttle unit, clean it and reinstall it.
  2. Get the engine up to operating temperature and then use the mega macs menu item Basic Settings to adjust the throttle settings.

Please do this by following the disassembly and reassembly instructions from the vehicle manufacturer.

Important safety note Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only. Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval and indication of the source. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.