Vauxhall Insignia - Engine warning light comes on | HELLA
Vauxhall
Insignia
Model year: 2010 - 2011
Engine warning light comes on
Error code: C1221, C1222, C1223, C1224
These mean that the input signal of the speed sensors is 0.
If the error codes can be linked with the above-mentioned problem, this could point to faulty control unit software.
According to the vehicle manufacturer, the situation can be remedied by programming the engine control unit with revised and improved software.
Such updating of software is only to be carried out by an authorised dealer.
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