C0061 means the ABS or electronic stability control module has detected an abnormal, missing, or out-of-range signal from the lateral acceleration sensor. This sensor measures sideways G-force so the stability system can detect sliding or skidding. The code is set when the module no longer trusts the sensor’s reading.
The accelerometer or combined yaw/lateral-acceleration module can drift, fail internally, or produce an out-of-range signal; this is the most common root cause for C0061.
Opens, shorts to ground or power, high resistance, or corrosion in the harness between the sensor and the ABS/ESC module can interrupt or distort the signal.
If the sensor is tilted, loose, or mounted on a damaged bracket, its zero-point and output will be wrong and may set a plausibility code.
A weak battery, poor charging system, or bad ground can cause the sensor or module to report erratic values, especially during cranking or high electrical load.
Internal failure of the control module that processes the lateral-acceleration signal is uncommon, but possible; it should only be considered after the sensor and wiring are ruled out.
You can usually drive carefully, but the stability and traction-control systems may be disabled or limited, so avoid aggressive maneuvers and repair it promptly.
Yes. Most lateral-acceleration or stability-control sensors require initialization or calibration with the vehicle on level ground after replacement or re-mounting; follow the service procedure.
Almost never. C0061 concerns the lateral-acceleration sensor and the ABS/ESC chassis system, not the engine computer; replacing the PCM is a common misdiagnosis and should be avoided unless separate PCM-related faults are proven.
Yes. Low or unstable voltage can make the sensor or control module report erratic readings, so verify battery state of charge and charging-system performance before replacing parts.