OBD Guide

P2838

Shift Fork B Position Circuit Low

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Incorrect gear shifting
  • Difficulty shifting gears
  • Transmission transition to emergency mode
  • The Check Engine light comes on
  • Reduced vehicle dynamics

Causes

  • Fork position sensor B malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Transmission control module (TCM) malfunction

How to Fix

  1. Check the condition of the fork position sensor B
  2. Check the integrity of the sensor circuit for open circuit and short circuit
  3. Check the contacts in the sensor circuit connectors
  4. If necessary, replace fork position sensor B
  5. Check and, if necessary, replace the transmission control unit

Related codes

Error P2838 by Vehicle Brand