Register to see pricing
Is your complaint not listed? Please contact our customer service
The Siemens Simtec 71 series is an engine management system for 1.8 (Z18XE) engines used in various Vauxhall models. Drivers can notice problems with this ECU when the engine management light (MIL) on the instrument cluster is illuminated. Various other warnings can appear on the dashboard as well, the car can go into emergency mode or it might jerk and the engine might no longer run on all cylinders.
Defects and faults of the ECU can be identified by a test drive, reading error codes or live data. As well as verifying the wiring, supply voltages and grounds with the wiring diagram. It is especially important to verify the input and output signals from the unit, as this is commonly where problems are found. Common faults are the lack of control of the throttle valve, injectors and ignition coils. Defects can also be present in the 5 volt circuit. Heat and vibration can cause the ECU to malfunction.
Often seen fault codes in the Simtec 71:
A malfunctioning ECU will have a major impact on other control units in the vehicle. It is possible for the engine to lose power, not run properly or not start at all. There can also be fault codes in, for example, the ABS system, the TCU or the instrument cluster.
A defective ECU can cause faults like the engine not starting, erratic running, lose power. In these cases the engine management light (MIL) will illuminate. Failure to resolve the issue can result in engine damage.
The ECU always undergoes an Entry Test upon reception. If the fault is found, the unit will be remanufactured. Before the unit is send the End Of Line test is performed to confirm that the faults have been resolved and the ECU is functioning properly.
Would you like to have a Siemens Simtec 71 or other ECU remanufactured? You can create a remanufacture request quickly and easily on our website. ACtronics has an extensive range of ECUs from well-known brands and models like: Bosch EDC16 or Delphi Delco Multec series
Would you like to have a product remanufactured that cannot be found on the website? Please contact our customer services to discuss the possibilities.
0 05 10 04 11 3
0 10 17 07 35 3
0 12 04 16 57 0
09 115 113
09 146 052
09 158 670
09 158 689
09 158 689 (Corsa)
09 158 726
09 158 726 (Corsa)
09 158 726 (Vectr...
09 179 499
09 179 499 (Vectr...
1 04 12 01 48 2
1 05 09 19 32 4
1 08 24 11 27 2
1 09 05 19 11 2
13 102 031
13 105 214
13 105 214 (Meriva)
14443879
2 04 25 11 27 5
2 11 15 09 12 4
2 12 19 02 59 1
24 421 815
24 426 542
24 443 879
24 443 879 (Corsa)
24 454 392
24 454 393
3 03 10 11 51 2
3 04 26 07 00 4
3 07 24 17 27 0
3 08 25 16 25 1
3 11 11 03 49 2
3031302374
4 04 26 13 56 4
55 351 702
55 351 703
55 351 751
55 351 752
55 351 753
55 352 666
55 354 446
5WK9 1170
5WK9 153
5WK9 154
5WK9 155
5WK9 156
5WK9 157
5WK9 158
5WK9 1712
5WK9 1713
5WK9 1715
5WK9 1716
5WK9 1720
5WK9 1721
5WK9 1726
5WK9 1727
5WK9 1728
5WK9 1732
5WK9 1740
5WK9 182
5WK9 196
5WK9 197
GM 55 350 979
S 01 001 10
© 2025 ACTRONICS LTD. All Rights Reserved.