OBD Guide

P2821

Pressure Control Solenoid J Stuck On

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Incorrect gear shifting
  • Dips when switching
  • Jerking when moving
  • Check Engine Light Illuminates
  • Transmission transition to emergency mode

Causes

  • Mechanical solenoid sticking
  • Transmission fluid contamination
  • Solenoid circuit problems
  • Transmission control unit malfunction
  • Worn or damaged solenoid

How to Fix

  1. Check the level and condition of the transmission fluid
  2. Diagnose the solenoid electrical circuit
  3. Check solenoid resistance
  4. If necessary, replace the solenoid
  5. In case of serious contamination, flush the system and replace the fluid.

Related codes

Error P2821 by Vehicle Brand