A fault code doesn’t yet mean the unit or sensor itself is faulty: often it’s the plug and connector leading to it.
Possible causes
- The rough road sensor or its connector
- Sensor connector or wiring: corrosion, an open circuit, a chafed wire
- ECU (rarely)
What you can do yourself
- This isn’t urgent: the engine runs as usual. The ECU uses this sensor to tell rough-road shaking from misfires — without it the misfire check works worse.
- Check the sensor connector: dirt, water, corrosion.
OOleg’s tip: check the connector
Often the cause is simple — there is no contact in the connector (plug). Look at the connector from the back: remove the rubber seal and you will see whether a wire is corroded or has come off completely. Corrosion shows up as green deposits. Ideally, gently pull each wire towards you one at a time: a sound wire stays in place, while a corroded one simply comes off — it needs to be repaired.
Unplug and inspect connectors with the ignition off.
This is the Hyundai meaning. On other makes this number means something else: if your car isn’t a Hyundai, change the make at the top.
Source: tat.net.au (Hyundai manufacturer codes)
The explanation comes from the error code reference in the AvtoElektrik PRO app.