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P2783 – Torque Converter Temperature Too High (OBD2)

P2783 means "Torque Converter Temperature Too High". The torque converter clutch (lock-up clutch) locks the torque converter at cruising speed to eliminate slip and save fuel; these codes cover its solenoid and performance.

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P2783 quick summary

Fault codeP2783
MeaningTorque Converter Temperature Too High
SystemPowertrain (Engine & Transmission)
VehiclesGeneric OBD2
SeverityMedium
Can I drive?Usually yes, but if the converter stays locked (stuck on) the engine can stall when stopping – drive carefully and get it checked.
Repair cost€50 – €2,500

How the torque converter clutch works

A torque converter transmits power through fluid, which always involves some slip. To reduce it, a lock-up clutch inside the converter is engaged at steady speeds. A solenoid in the valve body controls it, and the control unit checks the slip between engine speed and turbine speed.

Codes P0740–P0744 report circuit faults, a clutch that does not lock (performance or stuck off), one that stays locked (stuck on, which can stall the engine when stopping) and intermittent faults.

Symptoms include higher fuel consumption, higher engine speed at cruise, shudder when the clutch engages and stalling when coming to a stop.

Symptoms of P2783

  • Higher engine speed and fuel consumption at cruise
  • Shudder at around 60–80 km/h
  • Engine stalls when coming to a stop (stuck on)
  • Gearbox overheating
  • Check Engine or gearbox warning

Most common causes of P2783 (most likely first)

Mechanic's Pro Tip

Converter shudder is often fixed by fresh fluid of the exact specification – some gearboxes are very sensitive to friction modifiers in the oil. Try a fluid service before replacing the converter.

  1. 1.Faulty torque converter clutch solenoid

    Most likely

  2. 2.Degraded or low gearbox fluid

  3. 3.Sticking valve in the valve body

  4. 4.Worn lock-up clutch in the torque converter

  5. 5.Wiring or internal harness fault

Step-by-step diagnostic guide

  1. 1

    Read codes and slip data

    Read the transmission codes and watch commanded lock-up and converter slip in live data at steady speed.

  2. 2

    Check fluid

    Check fluid level and condition.

  3. 3

    Test the solenoid

    Measure the solenoid resistance and command it with the scan tool.

    Multimeter: Many TCC solenoids read about 10–20 Ω (on/off type) or 3–6 Ω (PWM type) – check the specification.

  4. 4

    Check for shudder

    Drive at a steady speed and gently accelerate; shudder points to the clutch or fluid.

  5. 5

    Repair and adapt

    Replace the solenoid or fluid; if the converter clutch is worn, replace the torque converter, then run adaptations.

How do I read fault codes? →Where the OBD2 port is, which scanner to use and how to read and clear codes step by step.

Frequently asked questions

Can I keep driving with P2783?

Usually yes, but if the converter stays locked (stuck on) the engine can stall when stopping – drive carefully and get it checked.

How much does it cost to fix P2783?

Typical repair costs are 50 € – 2500 €, depending on the cause and the vehicle. The most common fixes are: faulty torque converter clutch solenoid; degraded or low gearbox fluid; sticking valve in the valve body. Always confirm the cause with the tests above before buying parts.

What does torque converter lock-up do?

It mechanically connects the engine to the gearbox at cruise, eliminating slip and saving fuel.

Why does my car stall when stopping?

If the lock-up clutch stays engaged, the engine is still connected to the wheels when the car stops.

What is the difference between P2783 and similar codes?

P2783 belongs to a group of codes for the same component that differ in the type or location of the fault: P2761 – Torque Converter Clutch Pressure Control Solenoid Control Circuit/Open; P2762 – Torque Converter Clutch Pressure Control Solenoid Control Circuit Range/Performance; P2763 – Torque Converter Clutch Pressure Control Solenoid Control Circuit High; P2764 – Torque Converter Clutch Pressure Control Solenoid Control Circuit Low; P2769 – Torque Converter Clutch Circuit Low; P2770 – Torque Converter Clutch Circuit High. The tests on this page apply to the whole group; the type of fault tells you where to start.

Related fault codes

This guide is for information only. Working on vehicles can be dangerous — if you are unsure, have the car checked by a qualified mechanic. Values can differ between model years; always check the manufacturer's repair information.