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 sensor on the transmission
- Sensor connector or wiring: corrosion, an open circuit, a chafed wire
- ECU (rarely)
What you can do yourself
- The transmission may go into limp mode: shifts are harsh or the car drives in one gear. You can drive gently for a short distance.
- Check the connectors on the transmission case: oil or water in a connector is a common cause.
- Check the transmission fluid level and condition: dark and smelling burnt means the transmission needs repair.
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
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.
Find the part on Kaspi ShopBefore buying, check the part number or match the part by VIN in the Kaspi “Garage”.
This is the Toyota and Lexus meaning. On other makes this number means something else: if your car isn’t a Toyota or Lexus, change the make at the top.
Source: obdadvisor.com (Toyota manufacturer codes)
The explanation comes from the error code reference in the AvtoElektrik PRO app.