What are the symptoms of P0721?

Harsh or incorrect gear shifting, Speedometer not working or inaccurate, Check Engine Light on, Transmission enters limp mode

What causes code P0721?

Defective output speed sensor, Damaged or shorted wiring to the sensor circuit, Loose connectors or corrosion, Fault in the Transmission Control Module (TCM) or Powertrain Control Module (PCM)

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Fault Code P0721

Code meaning, symptoms, possible causes, part number, and estimated cost.

P0721

Output Speed Sensor Range/Performance

Severity: High

Code P0721 indicates a range or performance problem with the output speed sensor. The sensor is not providing consistent or correct readings for the transmission's output shaft speed.

Part Details

Part Name

Output Speed Sensor

Reference P/N (OEM)

N/A

General part number for this fault code — not necessarily for your specific vehicle

Estimated Cost

₪350 - ₪1,200

Engine Location

Near the transmission output shaft

Symptoms

Harsh or incorrect gear shifting
Speedometer not working or inaccurate
Check Engine Light on
Transmission enters limp mode

Possible Causes

1Defective output speed sensor
2Damaged or shorted wiring to the sensor circuit
3Loose connectors or corrosion
4Fault in the Transmission Control Module (TCM) or Powertrain Control Module (PCM)