OBD Guide

P2748

Intermediate Shaft Speed Sensor B Circuit Intermittent

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Incorrect gear shifting
  • Check Engine light comes on
  • Dips during acceleration
  • Jerks when moving
  • Switching to emergency mode of the gearbox

Causes

  • Intermediate shaft speed sensor B fault
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Mechanical damage to the intermediate shaft
  • Problems with the transmission control unit

How to Fix

  1. Check the condition of the intermediate shaft speed sensor B
  2. Inspect the sensor circuit for opens and shorts
  3. Check the contacts in the sensor and control unit connectors
  4. Replace sensor if necessary
  5. Check the mechanical condition of the intermediate shaft

Related codes

Error P2748 by Vehicle Brand