P2714 HiLux or Prado. Toyota A750F Harsh Shifts and the Solenoid Fault That Keeps Coming Back

You’re driving a HiLux or Prado. Maybe it’s towing the camper, maybe it’s loaded up for work. Everything’s fine — until you take off from a stoplight and suddenly the gearbox slams into second like it’s been punched. No warning. No consistency. Sometimes it happens, sometimes it doesn’t. But eventually, it logs a code. P2714 – Pressure Control Solenoid D Stuck Off.

You clear it. It comes back. You take it to a mechanic. They recommend a full transmission. Or they change the fluid and tell you it’s sorted.

Except it’s not.

At Brisbane Tuning & Turbo, we’ve seen dozens of Toyotas with the A750F 5-speed automatic throwing P2714. Prado 120s. HiLux 3.0s. Fortuners. Even some Land Cruisers. And most of the time, it’s not the whole transmission. It’s the valve body — and if you catch it in time, we can fix it without a full rebuild.

What Does P2714 HiLux or Prado Actually Mean in a Toyota?

P2714 HiLux or Prado stands for Pressure Control Solenoid D – Stuck Off. In plain English, the transmission tried to engage a specific solenoid to apply or modulate hydraulic pressure, and it didn’t respond correctly. The gearbox expected a clutch to apply at a certain moment… and it didn’t.

This is especially common in the A750F automatic transmissions, used in Toyota 4WDs from the early 2000s right through to late 2010s. It’s known for being strong — but also sensitive to heat and fluid breakdown.

Now, “Stuck Off” doesn’t always mean the solenoid has physically failed. In many cases, it’s still clicking, still receiving electrical signal, but internally — the hydraulic control circuit is leaking pressure through a worn bore or damaged separator plate. The ECU sees the mismatch and logs P2714.

How It Shows Up (and Why It’s So Often Misdiagnosed)

Here’s what our customers usually tell us:  “It jerks into second when it’s warm.”

“Fine on short trips, but after towing 40 minutes, it goes into limp mode.”

 “Scan tool said solenoid D stuck off, but it drives normally half the time.”

 “The dealer told me to replace the transmission.”

The trouble is, P2714 HiLux or Prado doesn’t always set a Check Engine Light right away. It can be a soft fault — one that only logs after certain temperature or load thresholds are reached. So, unless the workshop knows how to replicate load, the fault may not show up at all during a quick road test. Then you are told – “the code is intermittent and due to that we cannot replicate it”. Or – “let’s change the oil to be on the safe side”.

Which is why it keeps getting ignored… until it doesn’t.

Why It Happens – The Real Fault Isn’t Always the Solenoid

Solenoid D in the A750F is part of a pulse-width modulated (PWM) control circuit. It doesn’t just switch on and off — it varies pressure to control shift feel, clutch engagement timing, and gear changes under load.

Over time, several things can go wrong:

One reason- “Bore wear” in the valve body causes pressure leakage. Even if the solenoid is operating, the fluid can’t reach the clutch circuit cleanly.

The other “Warped separator plates” cause cross-leakage between circuits — this is especially common after overheating events.

Or, “Check balls” in the plate wear down or embed into the separator surface. That alters the timing of clutch application.

And even “The solenoid itself sticks”, either due to varnish or internal friction, particularly when fluid is neglected.

What this means is: you can replace the solenoid… and the fault comes back. Because you haven’t fixed the actual path the fluid needs to travel through.

Why You Can’t Fix This with a Fluid Flush?

It’s tempting to think a fluid change will help. But if the solenoid is sticking due to bore wear or separator distortion, clean fluid can’t restore the pressure path.

And worse — if you do a flush on your automatic transmission that’s already got minor clutch damage, you can actually dislodge debris and make it worse. We’ve seen Prado owners flush the automatic transmissions, clear the code, and then call us two weeks later when they’re stuck in third gear on the highway.

If you’ve seen P2714 HiLux or Prado once — that’s your warning shot.

It means the valve body’s losing control. It’s time to diagnose properly.

The Redorq Way – Scan + Dyno + Fluid Clarity

At Brisbane Tuning & Turbo, we don’t guess. We’ve built the Redorq diagnostic process to confirm whether your A750F’s valve body is the problem — and whether the converter’s at risk too.

The process starts with our $285 Scan + Dyno Diagnostic, which includes:

Scan logging of solenoid D command vs. response time.

Live data graphing of clutch pressure under load.

Dyno replication of hill load and thermal pressure conditions.

Fluid inspection, looking for heat, discolouration, or contamination.

This lets us see what’s really happening. Not just a code, not just a gut feeling — but pressure behaviour in real-time.

The Fix – Valve Body Rebuild or TQ+ Upgrade

Once we isolate the problem, we give you a fixed-price repair path.

If the converter is healthy and it’s purely a valve body issue, we offer a Redorq Valve Body Reman including:

Professionally rebuilt A750F valve body.

Upgraded separator plate.

Correct ball reinstallation + bore leak correction.

Fluid + filter replacement.

Learn-value reset and reprogramming.

This usually comes in at $2,200 to $2,800 total, depending on model and install complexity.

If fluid shows signs of torque converter clutch degradation, we may recommend a Redorq TQ+ package, bundling:

Remanufactured converter.

Cooler upgrade (for Prado towing setups).

ECU remap (where applicable).

All supporting diagnostics and install.

These repairs typically range between $2,900 and $3,800 — and save the gearbox from full internal damage.

Ignore It? Here’s What Happens.

Wait long enough, and the valve body begins to shift inconsistently.

Then the converter clutch starts to slip under light throttle.

Next, you’ll get P0741 or P2757, both pointing to full TCC failure.

Eventually, you’re stuck in third with an overheated box, facing a $6,800+ full transmission rebuild.

We’ve seen it all too often: one ignored solenoid code becomes a domino effect of failure.

P2714 is your early warning. It’s the code that gives you time to fix it properly — before it becomes a parts cannon.

Book the Diagnosis – Get Real Answers

If you’ve seen P2714 in your HiLux, Prado, Fortuner or Cruiser, don’t just clear it and hope.

Book in for a $285 Redorq Scan + Dyno.

We’ll show you the pressure loss, the solenoid timing, and the fluid truth — all backed by data, not guesswork.

And you’ll get a real quote — not “maybe a full transmission.”

Because you deserve an automatic transmission that works as hard as your Toyota does.

Click here to read about automatic transmission service & diagnostics.