P2816 code meaning
Pressure Control Solenoid H
Powertrain system Generic code P28xx codes Check engine light
What P2816 means
P2816 is the general code for pressure control solenoid H; a fault type byte usually narrows it down. The valve H stands for depends on the maker. Toyota uses the code on its eight-speed automatics: bulletin T-SB-0160-18 lists P28167F (actuator stuck off) for 2017-2018 Highlander and Sienna together with whine, harsh shifts and reduced power, and offers a remanufactured transaxle, while T-SB-0076-24 for the 2024 Tacoma names P281671 (actuator stuck) and replaces gearbox and torque converter. Mercedes-Benz lists P281600, a malfunction of pressure regulating valve 8, among the faults its guided repair tool handles on the 8G-DCT (transmission 724.1). Specific variants are P2817 to P281E.
P2816 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor2 to 12 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P2816
- MIL on, sometimes reduced engine power
- Harsh or erratic shifts
- Whining noise from the transmission
Common causes of P2816
- Most likelyInternal transmission damage leaving debris in the hydraulics (Toyota eight-speed)
- PossibleValve H sticking in its bore
- PossibleSolenoid H itself defective
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Pressure control solenoid hValve body
What each part of P2816 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 8 | Area: transmission. |
| 16 | The exact fault in that area. |
What to do next
- Note P2816 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P2816
What does P2816 mean?
P2816 means "Pressure Control Solenoid H". P2816 is the general code for pressure control solenoid H; a fault type byte usually narrows it down. It is a generic code, so it means the same on every make.
Is it safe to drive with P2816?
Drive gently and only to a workshop. With P2816 the car can go into limp mode (reduced power) to protect itself.
Will P2816 fail an emissions test?
Yes, it can. P2816 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P2816 to fix?
Difficulty: workshop only. A typical repair takes 2 to 12 hours of work. This is a job for a workshop.
Will P2816 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.