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P0776 – Pressure Control Solenoid B Performance or Stuck off (OBD2)

P0776 means "Pressure Control Solenoid B Performance or Stuck off". When the pressure control solenoid is activated, it does not give the expected result – it is stuck off, too weak, or the mechanical/hydraulic part behind it does not respond.

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P0776 quick summary

Fault codeP0776
MeaningPressure Control Solenoid B Performance or Stuck off
SystemPowertrain (Engine & Transmission)
VehiclesGeneric OBD2
SeverityHigh
Can I drive?Only carefully and preferably to a workshop. Harsh or slipping shifts can damage the gearbox.
Repair cost€100 – €2,000

How pressure control solenoids work

Pressure control solenoids set the hydraulic pressure that engages the gearbox clutches; these codes cover their electrical circuits and performance.

In an automatic gearbox, the clutches and brakes are applied by hydraulic pressure. Pressure control solenoids (often labelled A, B, C) in the valve body regulate main line pressure and the pressure for individual clutches. The control unit drives them with a variable current to make shifts smooth.

Codes P0745–P0749, P0775–P0779, P0795–P0799 and P0960–P0971 report circuit faults (open, low, high, electrical), performance or stuck off, stuck on and intermittent faults.

Wrong pressure causes harsh or slipping shifts and often limp mode. Besides solenoid failures, dirty fluid and worn valve bodies are common causes.

On VAG vehicles (VW, Audi, Škoda, Seat, Cupra), VCDS and older VAG testers can show this code as the five-digit VAG code 17160 (P0776). Both numbers mean the same fault.

Symptoms of P0776

  • Harsh or slipping shifts
  • Limp mode
  • Delayed engagement into Drive or Reverse
  • Check Engine or gearbox warning
  • Shift flare

Most common causes of P0776 (most likely first)

Mechanic's Pro Tip

On many modern gearboxes the solenoids are only sold as part of the valve body or mechatronic unit – but specialist rebuilders often offer individual solenoids or reconditioned units at a much lower price.

  1. 1.Sticking or worn pressure control solenoid

    Most likely

  2. 2.Low fluid level or pressure, clogged filter or screen

  3. 3.Internal wear (clutch, seal or valve body)

    Leaking seals stop pressure building up even with a good solenoid.

  4. 4.Faulty pressure control solenoid

  5. 5.Dirty or degraded gearbox fluid

  6. 6.Internal harness or connector fault

  7. 7.Transmission control unit fault

Step-by-step diagnostic guide

  1. 1

    Read codes and pressure data

    Read the transmission codes and, where available, commanded and actual pressures or solenoid currents.

  2. 2

    Check fluid, then test the function

    Check fluid level and condition. Command the pressure control solenoid with a scan tool and watch whether the related value (pressure, engine speed drop, slip) changes as expected. No change with a good electrical circuit points to a mechanical or hydraulic fault.

  3. 3

    Check fluid

    Check fluid level and condition and look for debris.

  4. 4

    Measure the solenoid

    Measure the solenoid resistance through the gearbox connector.

    Multimeter: Variable force/pressure solenoids often read about 3–8 Ω; check the specification.

  5. 5

    Check line pressure

    Measure line pressure with a gauge if the gearbox has a test port.

  6. 6

    Repair and adapt

    Replace the solenoid, valve body or harness as needed, change the fluid and run the adaptations.

Frequently asked questions

Can I keep driving with P0776?

Only carefully and preferably to a workshop. Harsh or slipping shifts can damage the gearbox.

How much does it cost to fix P0776?

Typical repair costs are 100 € – 2000 €, depending on the cause and the vehicle. The most common fixes are: sticking or worn pressure control solenoid; low fluid level or pressure, clogged filter or screen; internal wear (clutch, seal or valve body). Always confirm the cause with the tests above before buying parts.

What does a pressure control solenoid do?

It regulates the hydraulic pressure that engages the clutches, so shifts are firm but smooth.

Can dirty fluid cause these codes?

Yes. Debris and degraded fluid can make the solenoids and valves stick.

What is the difference between P0776 and similar codes?

P0776 belongs to a group of codes for the same component that differ in the type or location of the fault: P0748 – Pressure Control Solenoid Electrical; P0749 – Pressure Control Solenoid Intermittent; P0775 – Pressure Control Solenoid B; P0777 – Pressure Control Solenoid B Stuck On; P0778 – Pressure Control Solenoid B Electrical; P0779 – Pressure Control Solenoid B Intermittent. 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.