OBD Guide

P0777

Pressure Control Solenoid B Stuck On

P0777 is an OBD-II diagnostic trouble code meaning: Pressure Control Solenoid B Stuck On. Common causes: jammed solenoid, contaminated transmission fluid. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Incorrect gear shifting
  • Switching delays
  • Dips during acceleration
  • Increased engine speed when switching
  • Check Engine light comes on

Causes

  • Jammed solenoid
  • Contaminated transmission fluid
  • Problems in the electrical control circuit
  • Solenoid wear
  • Transmission control module malfunction

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Test the solenoid circuit
  3. Clean or replace solenoid
  4. If necessary, replace the solenoid block
  5. Reset transmission adaptations

Related codes

Error P0777 by Vehicle Brand

FAQ

What does the P0777 code mean?

P0777 is an OBD-II diagnostic trouble code that indicates: Pressure Control Solenoid B Stuck On

What causes a P0777 error code?

The most common causes of P0777 include: Jammed solenoid; Contaminated transmission fluid; Problems in the electrical control circuit; Solenoid wear.

How do I fix a P0777 diagnostic trouble code?

To fix P0777: Check the level and condition of the transmission fluid. Test the solenoid circuit. Clean or replace solenoid. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P0777?

Yes, but get it checked soon

How much does it cost to fix P0777?

The estimated repair cost for P0777 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat