P0724 — Output Speed Sensor Intermittent
Drivable short-term, but fix now to avoid damage.
What P0724 means
This code means the output speed sensor signal is dropping out intermittently, so the transmission control module loses reliable speed data on and off. It's most often caused by loose or corroded connectors, chafed wiring, or a sensor that's beginning to fail. Repairs usually involve carefully inspecting the wiring and connectors and replacing the sensor, and it's typically fixable without major transmission work.
Common symptoms
- Check engine light comes and goes
- Occasional harsh or erratic shifts
- Intermittent limp mode
- Speedometer flickering or dropping out
- Cruise control cutting out
Common causes
- Loose or corroded sensor connector
- Chafed or intermittently broken wiring
- Failing output speed sensor
- Poor ground connection
- Metal debris intermittently affecting the sensor
Typical repair cost
$150 – $450
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0724 code?
For short trips, usually yes, but it's risky because the fault is unpredictable. The transmission could drop into limp mode without warning, so get it checked soon.
How much does it cost to fix a P0724 code?
Expect roughly $150 to $450. Intermittent faults can take extra diagnostic time to trace bad wiring or connectors, which may add to the labor cost.
Is a P0724 code serious?
It can be, mostly because it's unpredictable. The signal cutting in and out can cause sudden rough shifts or limp mode, so it's worth fixing promptly.
Why is an intermittent code like P0724 harder to diagnose?
Because the fault only appears now and then, the problem may not show up while the technician is testing. They often have to wiggle-test wiring and connectors to catch it.