P2784

Input/Turbine Speed Sensor A/B Correlation

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$28–89 (est.)

Symptoms

Incorrect gear shifting
Switching delays
Switching to emergency mode of the gearbox
Increased fuel consumption
Check Engine Light Illuminates

Causes

Input shaft speed sensor malfunction
Turbine speed sensor malfunction
Problems with wiring or connectors
Mechanical problems in the transmission
Transmission control module (TCM) malfunction

How to Fix

Check the condition and connections of the speed sensors
Check the integrity of the wiring to the sensors
Check sensor resistance (compare with specifications)
Carry out diagnostics of the mechanical part of the transmission
If necessary, replace faulty sensors

Related codes

P2785 P2783 P0720