OBD Guide

P07C1

Input/Turbine Shaft Speed Sensor B Circuit Low

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–78 (est.)

Symptoms

  • Incorrect gear shifting
  • Transmission of the gearbox into emergency mode
  • Reduced engine power
  • Check Engine Light Illuminates
  • Overclocking problems

Causes

  • Faulty turbine input shaft speed sensor B
  • Open or short circuit in the sensor circuit
  • Poor connection or corroded connectors
  • Transmission control module malfunction
  • Mechanical problems with the turbine input shaft

How to Fix

  1. Diagnostics of the sensor circuit for breaks and short circuits
  2. Checking the sensor connections and connectors
  3. Checking the resistance and output of the sensor
  4. Replacing a faulty speed sensor
  5. Checking the condition of the turbine input shaft

Related codes

Error P07C1 by Vehicle Brand