P2787

Clutch Temperature High - Transmission Range not Achieved

P2787 is a generic OBD-II powertrain diagnostic trouble code: Clutch Temperature High - Transmission Range not Achieved. It is logged by the engine control unit when the powertrain monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.

Code
P2787
Group
Powertrain
System
Powertrain
Severity
Warning (MIL on, possible limp mode)
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What P2787 means

P2787 is stored when the TCM determines that excessive clutch temperature has prevented the transmission from achieving the commanded gear range. Modern automatic and dual-clutch transmissions monitor clutch pack temperature either directly via a temperature sensor or indirectly through a thermal model based on slip time and torque load. When temperature exceeds the calibrated limit, the TCM restricts shift operations to protect the clutch friction material.

This code is especially common in dual-clutch transmission (DCT) applications during stop-and-go traffic or repeated launch events, where the clutch must slip for extended periods. In conventional automatic transmissions, it can appear after towing events or aggressive driving that generates sustained clutch slip.

Repair strategy depends heavily on the root cause. If the clutch temperature elevation is caused by a mechanical fault such as a dragging clutch, worn friction material, or low fluid level, those items must be addressed. If the fault occurs only after stressful driving cycles and the transmission is otherwise healthy, the vehicle may simply require cooling time before normal operation resumes.

Common causes

Most-frequently reported root causes when P2787 is logged.

  • 1
    Extended clutch slip from repeated launch attempts in stop-and-go traffic.
  • 2
    Towing or hauling loads beyond the vehicle's rated capacity.
  • 3
    Low or degraded transmission fluid causing poor heat dissipation.
  • 4
    Worn clutch friction material with reduced heat capacity.
  • 5
    Dragging clutch pack due to hydraulic pressure fault or mechanical damage.
  • 6
    Faulty clutch temperature sensor providing incorrect high readings.
  • 7
    Malfunctioning transmission cooling system or blocked cooler lines.

Symptoms drivers notice

MIL or transmission warning light illuminated.
Transmission refuses to shift into certain gears or enters limp mode.
Burning smell from the transmission area.
Sluggish or harsh acceleration from a standstill.
Transmission cooling fan operating at full speed in applicable vehicles.

How to diagnose P2787

A typical diagnostic flow when this code is present.

  1. 1
    Retrieve all DTCs and review freeze frame data to identify the driving conditions at fault set.
  2. 2
    Allow the transmission to cool completely and check whether the code remains or is pending only.
  3. 3
    Check transmission fluid level and condition; dark, burnt-smelling fluid indicates overheating history.
  4. 4
    Monitor clutch temperature live data with a scan tool under normal driving conditions.
  5. 5
    Inspect the transmission fluid cooler and cooler lines for blockage or damage.
  6. 6
    If a direct temperature sensor is fitted, verify its accuracy against known-good specification.
  7. 7
    If overheating recurs under normal conditions, perform a detailed hydraulic pressure test to identify clutch drag.

Related powertrain codes

Frequently asked questions

Can P2787 clear itself after the transmission cools down?

The code may become pending or the MIL may extinguish after cooling, but if the underlying cause is not corrected it will return under similar operating conditions.

Is P2787 common in dual-clutch transmissions?

Yes. DCTs are particularly susceptible to clutch overheating during repeated low-speed manoeuvres because the clutch must slip to manage vehicle creep.

Does P2787 mean the clutch is destroyed?

Not necessarily. A single overheat event may not cause permanent damage, but repeated events accelerate wear of the clutch friction material.

Can changing the transmission fluid fix P2787?

If the fluid is degraded and unable to carry heat effectively, a fluid change can help, but it will not fix worn friction material or a dragging clutch pack.

Disabling P2787 in software

RaceTune can permanently disable P2787 — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.

Permanent
The monitor is disabled in the ECU itself — not just cleared. It cannot return.
Tailored to your file
Each patch is matched to your specific software version — never a one-size-fits-all file.
Reversible
The original file is always preserved. Reflash the stock to return the ECU to factory state.

Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.

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