# C2020 on the 2018 Fiat 500X

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name C2020

- [10220625](https://open.wenmarpro.com/bulletins/10220625), 2022-09-26: Flash: Drivetrain Control Module \(DTCM\) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\):C2502\-64 \- Signal Plausibility Failure. C2210\-92 \- ETM Hall Sensor Performance Or Incorrect Operation. C2220\-54 \- ETM Calibration Error Missing Calibration. C2020\-01 \- ECU Internal Fault \- General Electrical Failure. This software update also includes the following enhancementsReduce Rear Drive Module \(RDM\) noise during disconnect phase at speeds above 45 kph \(28 mph\)North America Only.
- [10188829](https://open.wenmarpro.com/bulletins/10188829), 2021-03-15: Flash: Drivetrain Control Module \(DTCM\) Diagnostic and System Improvements This bulletin involves reprogramming the DTCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTCs\):C2502\-64 \- Signal Plausibility Failure. C2210\-92 \- ETM Hall Sensor Performance Or Incorrect Operation. C2220\-54 \- ETM Calibration Error Missing Calibration. C2020\-01 \- ECU Internal Fault \- General Electrical Failure. This software update also includes the following enhancementsReduce Rear Drive Module \(RDM\) noise during disconnect phase at speeds above 45 kph \(28 mph\)North America Only.