All codes
P0723Transmission Issues
Output Speed Sensor Circuit Intermittent
P0723 means the transmission output speed signal drops out or changes unexpectedly. Learn what to check before replacing parts.
What you may notice
Symptoms
- 01Warning light may illuminate
- 02Intermittent or implausible scan data
- 03Vehicle-specific symptoms may vary
Where to look first
Common causes
- 01An intermittent sensor connection, harness fault, or internal speed-sensor issue can interrupt the signal.
- 02Wiring, connector, or ground fault
- 03Vehicle-specific mechanical or control issue
A sensible sequence
Best diagnostic order
- 01Save codes and freeze-frame information
- 02Graph output speed during a controlled drive and inspect the sensor connection and wiring for intermittent faults.
- 03Confirm readings with vehicle-specific specifications
- 04Verify the repair under the conditions that set the code
Step by step
What to check and repair
- 01Graph output speed during a controlled drive and inspect the sensor connection and wiring for intermittent faults.
- 02Repair only the verified cause and retest
Read the signals
Live-data clues
Related sensor or switch signal
- Typical behavior
- Plausible and consistent with the operating condition
- Possible clue
- An unexpected value or dropout helps localize the fault
| Parameter | Typical behavior | What it can suggest |
|---|---|---|
| Related sensor or switch signal | Plausible and consistent with the operating condition | An unexpected value or dropout helps localize the fault |
What P0723 means
The transmission output speed signal drops out or changes unexpectedly. The code identifies an observed condition; it does not prove which part needs replacement.
Diagnostic direction
Graph output speed during a controlled drive and inspect the sensor connection and wiring for intermittent faults.
Before clearing the code
Save stored and pending codes and freeze-frame data. Use service information for the exact vehicle before repair, then confirm the issue no longer returns.