KlaroP0721
MODERATEOutput Speed Sensor Range/Performance
What this code means
Output Speed Sensor Range/Performance. Automatic or automated gearbox: ratios, clutches, speed sensors. These codes often come with a limp mode that locks the box in a single gear.
How to read this code
- PPowertrain
- 0standardised code
- 7Transmission
- 21P0721
The letter P names the system: Powertrain. The digit 0 that follows marks a standardised code, shared by all manufacturers code. The next digit, 7, locates the fault: transmission.
What to do
Have it checked this week. The car remains usable, but the fault will not clear itself and will fail the roadworthiness test.
Clearing a code switches the light off but repairs nothing: if the fault remains, the code comes back.
Nearby codes
- P0720Output Speed Sensor Circuit Malfunction
- P0722Output Speed Sensor No Signal
- P0723Output Speed Sensor Intermittent
- P0724Torque Converter/Brake Switch B Circuit High
- P0725Engine Speed input Circuit Malfunction
- P0726Engine Speed Input Circuit Range/Performance
- P0727Engine Speed Input Circuit No Signal
- P0728Engine Speed Input Circuit Intermittent