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A possible solution to the Grancheck error on the Fiat Grande Punto.

Model: Fiat Punto 199, MK 3, Grandepunto , Punto EVO - Years: 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
Part: Onboard computer

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Video tutorial

In this video, we see a possible solution to resolve the grandcheck error on the Fiat Grande Punto: this error is a generic message that appears on the instrument panel when the control unit detects a problem in the vehicle's electronic system. The possible causes can be multiple: issues with the battery or electrical system; problems with the probes or sensors; damage to the control unit or wiring; issues with the injection system.

In the specific case of the video, the error occurs because the original car radio is missing: the CAN bus system expects to communicate with the factory radio, but if it has been replaced with a non-compatible aftermarket one, it generates an error.

The YouTuber manually connects the CAN bus wires to the diagnostic connector under the steering wheel, making the control unit believe that the radio is present.

It is a low-cost solution to install an original radio or a CAN adapter, which would be the best solution, although it certainly costs more (at least 50 euros).


Posted on 9 January 2026 by ScegliAuto


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