C0720 code meaning
Electric Power Steering Torque Sensor Circuit
What C0720 means
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.
C0720 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyHard
- Typical labor1 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0720
- Sudden loss of steering assist with warning message and chime
- Heavy steering at low speed
Common causes of C0720
- Most likelySteering torque sensor defective
- PossibleLoose or corroded connector between sensor and EPS module
- Less likelySensor zero point not learned after replacement
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Eps torque sensorEps control moduleSensor wiring
What each part of C0720 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 20 | The exact fault in that area. |
What to do next
- Note C0720 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0720
What does C0720 mean?
C0720 means "Electric Power Steering Torque Sensor Circuit". 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. It is a generic code, so it means the same on every make.
Is it safe to drive with C0720?
Drive gently and only to a workshop. With C0720 the car can go into limp mode (reduced power) to protect itself.
Will C0720 fail an emissions test?
C0720 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0720 to fix?
Difficulty: hard. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will C0720 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.