OBD Guide

P071E

Transmission Mode Switch B Circuit Low

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

Symptoms

  • Check Engine Light Is On
  • The gearbox goes into emergency mode
  • Limited choice of transmission modes
  • Gear shifting problems
  • Reduced vehicle dynamics

Causes

  • Transmission Mode Switch B Malfunction
  • Open or short circuit in the circuit
  • Poor contact in connectors
  • Problems with the transmission control unit
  • Switch contact corrosion

How to Fix

  1. Check the condition of the transmission mode switch B
  2. Inspect the wiring harness for damage
  3. Check contacts in connectors
  4. Test circuit resistance
  5. Replace switch if necessary

Related codes

Error P071E by Vehicle Brand