Error code

OBD2 P0722

OBD2P0722
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Output Speed Sensor Circuit No Signal.

Severity

moderateCan drive but may experience harsh gear shifts and increased fuel consumption.

Summary

P0722 indicates that the output shaft speed (OSS) sensor is not sending a signal to the PCM. This sensor is typically located near the transmission output shaft and is crucial for gear shift timing and vehicle speed indication.

Symptoms

  • Stored trouble code
  • Illuminated warning light
  • Harsh, erratic, or delayed gear shifts
  • Transmission may not shift at all
  • Increased fuel consumption

Common Causes

  • Defective or damaged output shaft speed sensor
  • Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors

Diagnosis

  1. Record all fault codes and freeze frame data.
  2. Visually inspect and repair damaged wiring.
  3. Perform resistance, ground, continuity, and reference voltage tests on the sensor's wiring.
  4. Check the internal resistance of the sensor.
  5. Inspect the sensor for damage and test its signal output.

Fixes

  • Replace the defective or damaged output shaft speed sensor.

FAQ

What does P0722 mean?

P0722 means that the PCM is not receiving a signal from the transmission's output shaft speed sensor, which affects gear shift timing and vehicle speed indication.

How do I fix P0722?

Fixing P0722 involves checking and repairing wiring issues or replacing the defective output shaft speed sensor if it is damaged.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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