P3025moderate severityPowertrain
CVT Fluid Temperature Sensor Circuit
on 2023 BMW i7 M70 Dual Motor AWD · AWD
What this code means
The CVT fluid temperature sensor is reporting values outside the expected range.
Symptoms
- Check Engine Light
- Incorrect temperature display
- Fan may run continuously
- Transmission may overheat
- Delayed protection mode activation
Common causes
- Faulty temperature sensor
- Corroded sensor connector
- Damaged wiring
- Sensor out of calibration
- Short in circuit
Diagnostic steps
- Read CVT fluid temp PID
- Compare to actual temp with infrared thermometer
- Test sensor resistance vs temperature
- Inspect connector and wiring
- Check for shorts to ground or power
Repair notes
Replace CVT fluid temperature sensor.
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