Error code P0711 is displayed and the check engine light is on - what does this mean?
The OBD system detects a fault in the transmission oil temperature sensor circuit that is outside the expected range. This DTC P0711 relates to the automatic transmission and its temperature monitoring. For various manufacturers, this fault code may also be referred to as "Transmission Fluid Temperature Sensor A Circuit Range/Performance".
What causes can this fault code have?
- Defective transmission fluid temperature sensor
- Damaged cable connections to the sensor
- Corroded or loose plug connections
- Defective transmission control unit (TCM)
- Short circuit or interruption in the sensor cable
- Dirty or clogged sensor
- Low transmission oil level
- Defective ground connection in the sensor system
What symptoms occur in parallel with fault code P0711?
- Shifting problems: The automatic transmission shifts irregularly or jerkily
- Emergency program: The transmission switches to safety mode with limited gears
- Delayed shifting: Gear changes occur later than normal
- Overheating: The transmission can overheat because the temperature monitoring is faulty
- Starting problems: In rare cases, the vehicle is unable to start
- Warning lights: In addition to the engine warning light, a transmission warning light may also come on
How can the problem with error code P0711 be rectified?
- The repair requires a systematic approach to identify the exact cause.
- Replace the transmission oil temperature sensor: Locate the defective sensor, remove it and replace it with a new original part, then reset the system using an OBD scanner
- Check and repair wiring harness: Inspect all wires between sensor and control unit for damage, replace or repair defective wires and re-insulate connections
- Clean and secure plug connections: Disconnect sensor plug, clean contacts with contact spray, check for corrosion and reconnect firmly
- Check transmission oil level and top up: Check the oil level when the engine is warm, top up with the correct ATF oil if necessary and check for contamination or discoloration at the same time
- Diagnose the transmission control unit: Check TCM with professional diagnostic technology, replace if defective and then have it reprogrammed
- Carry out a complete system diagnosis: Use an EOBD tester to read out all transmission system parameters, monitor sensor signals in live mode and systematically test all components
FAQ - Frequently asked questions about DTC P0711
Can I continue driving with error code P0711?
It is possible to drive short distances, but you should have the problem rectified as quickly as possible. The transmission can switch to emergency mode and overheat if the temperature is not monitored, which can lead to costly consequential damage.
How much does it cost to repair error code P0711?
The costs vary depending on the cause: A new transmission oil temperature sensor costs 50-150 euros, cable repairs 100-300 euros. A defective transmission control unit can cost between 800-2000 euros. The working time is usually 1-3 hours.
How do I recognize a defective transmission oil temperature sensor with P0711?
Typical signs are irregular gear changes, the transmission jumps into emergency mode or the temperature display shows unrealistic values. You can use an OBD scanner to monitor the live data from the sensor and identify abnormal values.
Can I delete the trouble code P0711 myself?
It is possible to clear the code with an OBD scanner, but the fault code will return if the root cause has not been rectified. A professional diagnosis is therefore essential to solve the problem permanently.
What consequential damage can error code P0711 cause?
Without repair, transmission damage can occur due to overheating, as the temperature monitoring does not work. The service life of the automatic transmission is also considerably shortened if it is permanently operated in the emergency running program.
How long does it take to diagnose and repair P0711?
Fault diagnosis usually takes 30-60 minutes. Depending on the cause, the repair time is 1-4 hours. Replacing the sensor is relatively quick, while cable repairs or replacing the control unit take longer.