C0720Electric Power Steering Torque Sensor Circuit
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- No publicly available J2012 list contains C0720, and the only maker that uses it means something else: GM files C0720 71 on the 2011 Saab 9-5 and 9-4X as invalid engine torque data received by the suspension module over CAN; the damping control stays off for that ignition cycle and a history entry clears after 41 fault-free cycles. For the torque sensor in the title, GM uses C0545 instead (bulletin PIT5213B for 2014-15 full-size trucks) and Stellantis C1593. The sensor measures the twist of a torsion bar between steering wheel and gear, often with linear Hall chips such as Infineon's TLE499x family. GM's special coverage 15356 for the 2007-12 Malibu, G6 and Aura shows the effect of a failed sensor: sudden loss of assist with a warning chime, fixed by a new sensor or motor/controller.
- What you may notice
- Sudden loss of steering assist with warning message and chime
- Heavy steering at low speed
- Likely causes
- LikelySteering torque sensor defective
- PossibleLoose or corroded connector between sensor and EPS module
- RareSensor zero point not learned after replacement
- Repair
- Hard · Usually a job for a workshop.Typical cost: €200 – €1,800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.