P2705 — Transmission clutch apply signal is inconsistent

The transmission control module is receiving an unexpected or impossible signal about how long a specific clutch inside the transmission is being applied. This usually means the system is confused about the clutch operation, which can cause shifting problems or erratic transmission behavior.

Common causes

The cause is almost always one of a few things. Here they are — P2705 rarely comes from anything outside this list:

• Faulty transmission clutch pressure sensor
• Damaged wiring or poor electrical connections
• Malfunctioning transmission control module
• Internal transmission clutch wear or damage
• Low or contaminated transmission fluid

Where to start

In the order a sensible mechanic would work — the cheap checks first, the expensive replacements only after:

1. Check and repair wiring and connectors first
2. Inspect and top up transmission fluid
3. Test and replace faulty sensors if needed
4. Reset transmission control module codes
5. Consider transmission service or clutch pack repair

That is what holds for P2705 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.