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Code

P0780

Transmission

Shift malfunction

The transmission cannot shift correctly.

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Most likely causes

Worn clutches
Low fluid
Solenoid issue

Symptoms you may notice

Erratic shifts
RPM flare

Checks to run

Check fluid
Read live ratios
Pressure test

Tools you may need

OBD-II scanner

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Transmission

Transmission control system malfunction

Transmission range sensor (PRNDL) circuit malfunction

Output shaft speed sensor circuit malfunction

Incorrect gear ratio

Torque converter clutch circuit stuck off

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