P0702high severityPowertrain
Transmission Control System Electrical
on 2000 BMW 528i 2.8L I6 M52 · RWD
What this code means
The PCM detected an electrical fault in the transmission control system. This can cause erratic shifting or transmission limp mode.
Symptoms
- Harsh or erratic shifting
- Transmission limp mode
- Check engine light on
Common causes
- Wiring or connector fault in transmission circuit
- Failed transmission solenoid
- Internal TCM fault
- Poor ground connection
Diagnostic steps
- Scan and confirm P0702 code
- Inspect transmission wiring and connectors
- Test transmission solenoids and sensors
- Check TCM power and ground circuits
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Other Powertrain codes on this vehicle
29CC
Misfire Cylinder 1
29CD
Misfire Cylinder 2
29CE
Misfire Cylinder 3
29CF
Misfire Cylinder 4
29D0
Misfire Cylinder 5
29D1
Misfire Cylinder 6
29D2
Misfire Cylinder 7
29E0
Lambda Additive/Idle Adaptation Limit, Bank 1
29E1
Lambda Additive/Idle Adaptation Limit, Bank 2
29E2
Lambda Multiplicative Part-Load Adaptation Limit, Bank 1