OA 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
- Faulty speed sensor
- Damaged wiring or connector
- Internal slipping in the gearbox
What you can do yourself
- Inspect the sensor connector
- Harsh and incorrect shifts are possible — drive gently
- Sensor and wiring check by a technician
Stop and don’t drive on if:
- The Check Engine light is flashing
- The temperature gauge is in the red or the overheating light is on
- The red oil pressure light is on
- Smoke from under the bonnet, a burning or petrol smell
- Strong jerking, knocking from the engine, or the car barely moves
OOOleg’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.
Find the part on Kaspi ShopBefore buying, check the part number or match the part by VIN in the Kaspi “Garage”.
For other makes this code means
- Hyundai — Hyundai: input speed sensor — abnormal signal
On Oleg’s website:Transmission adaptation ↗
O
The explanation comes from the error code reference in the AvtoElektrik PRO app.
The same number can mean different things for different makes. Below is the make-specific meaning.
Hyundai: Hyundai: input speed sensor — abnormal signal
Don’t put off the repair
OA 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
- Faulty input speed sensor
- Open circuit, short, pinched harness, bent or pushed-out connector pin
What you can do yourself
- Symptoms: a jolt when engaging R or D, the gearbox stays in 3rd (limp mode)
- First check the wiring and connector
- Sensor replacement — by a technician
Stop and don’t drive on if:
- The Check Engine light is flashing
- The temperature gauge is in the red or the overheating light is on
- The red oil pressure light is on
- Smoke from under the bonnet, a burning or petrol smell
- Strong jerking, knocking from the engine, or the car barely moves
OOOleg’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.
Find the part on Kaspi ShopBefore buying, check the part number or match the part by VIN in the Kaspi “Garage”.
Source: vehicleservicepros.com
On Oleg’s website:Transmission adaptation ↗
O
Open in the app for Hyundai