P0721

Output Shaft Speed Sensor Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Enabling emergency transmission mode
Check Engine light comes on
Reduced engine power
Problems with cruise control

Causes

Output shaft speed sensor malfunction
Damaged or broken wiring
Poor contact in the sensor connector
Problems with the transmission control unit
Mechanical transmission problems

How to Fix

Check the condition of the sensor and its connector
Check the integrity of wiring and contacts
Test the sensor with a multimeter
Replace sensor if necessary
Check transmission control unit

Related codes

P0720 P0722 P0723