These low/high codes are a purely electrical check of the sensor's signal voltage at the module and run even with the vehicle at rest – unlike the circuit, range, no-signal and intermittent codes, which evaluate speed while driving. Low means a short to ground, high a short to supply or, depending on the circuit, an open. No manufacturer document available to us uses this code. Sensor B is typically the second input shaft of a dual-clutch transmission (reverse and even gears); Ford's DPS6 reports it under P2765–P2767, and a VW/Getrag patent notes that the speed of a failed input shaft can be calculated from the other one. The expected logic follows GM's sensor A check (above 4.75 V).
Medium severity. Can I keep driving?Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.
Symptoms
- Check engine light (GM after one trip)
- Limp mode, harsh shifts, no converter lock-up
- Adaption frozen
Most likely causes
- Signal wire shorted to supply
- Open circuit or broken wire inside the sensor
- Corroded connector
- Module input faulty
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
- It can trigger limp mode.
- It affects emissions.
What each character of P07C2 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- 7: Transmission
- C2: Specific fault in that system
Frequently asked questions
Can I keep driving with code P07C2?
Drive gently to a repair shop. If it slips, you hear clunks, or it loses its gears, do not keep driving.
What causes code P07C2?
The most common causes are: signal wire shorted to supply; open circuit or broken wire inside the sensor; corroded connector.
Related codes
- P07C1Input/Turbine Shaft Speed Sensor B Circuit Low
- P2765Input/Turbine Shaft Speed Sensor B Circuit
- P2766Input/Turbine Shaft Speed Sensor B Circuit Range/Performance
- P2767Input/Turbine Shaft Speed Sensor B Circuit No Signal
- P07BFInput/Turbine Shaft Speed Sensor A Circuit Low
- P06A7Sensor Reference Voltage B Circuit Range/Performance
Sources
- law.cornell.edu: 13 CCR 1968.2
- newtonnet.co.uk: fordobd2012
- patents.google.com: US7624658
- gsi.ext.gm.com: 25OBDG03A
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.