P07C0
Input/Turbine Shaft Speed Sensor A Circuit High
Transmission / speed sensors
Generic OBD-II
Medium
What it means
P07C0 means the input/turbine shaft speed sensor signal is reading abnormally high — usually an open or a short to voltage in the circuit. That sensor tells the transmission control module how fast the transmission input is turning, which it needs to time shifts and torque-converter lockup. Without a valid reading, shifts can turn harsh or erratic and the transmission may enter limp mode. It does not stop the engine from starting.
Medium
Can I keep driving? Usually drivable, but expect harsh or wrong-timed shifts and possible limp mode — fix it to avoid added transmission wear.
Common symptoms
What you'll notice
- Harsh, erratic, or wrong-timed shifts
- Slipping feel or no torque-converter lockup
- Limp mode (fixed gear)
- Check-engine light on
Common causes
Most likely first
- Faulty input/turbine shaft speed sensorLikely
- Wiring shorted to voltage or open in the sensor circuitCommon
- Corroded or loose sensor connectorCommon
- Metal debris on the sensor tip or excessive air gapLess often
- Internal wiring fault or failed transmission control module (TCM)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check for companion speed-sensor codes.
- Inspect the sensor connector and wiring for shorts-to-power or opens.
- Check the sensor air gap and clean any metal debris off the tip.
- Measure the sensor's signal against specification with a scan tool.
- Replace the sensor if out of spec; evaluate the TCM last. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P07C0?+
Usually yes for short trips, though shifts may be rough or the transmission may enter limp mode. It won't stop the car, but repair it to avoid added wear.
Can I just clear P07C0?+
You can, but it returns until the sensor or its wiring is fixed — the TCM needs a valid input-speed signal to time shifts.
Related codes
Often seen with P07C0
Read & clear P07C0 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX