OBD Guide

P08D4

Shift Solenoid J Control Circuit/Open

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–67 (est.)

Symptoms

  • The car goes into emergency gearbox mode
  • Difficulty shifting gears
  • Extended intervals between switchings
  • Check Engine light comes on
  • Possible jerks when switching

Causes

  • Open or shorted in the solenoid control circuit
  • Shift Solenoid J Malfunction
  • Problems with the transmission control unit
  • Poor contact in wiring connectors
  • Mechanical damage to the wiring harness

How to Fix

  1. Check continuity of solenoid J control circuit
  2. Test solenoid resistance
  3. Inspect connectors and contacts for oxidation
  4. If necessary, replace the solenoid
  5. Check the functionality of the transmission control unit

Related codes

Error P08D4 by Vehicle Brand