July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

DTC C1222 [Dynamic Stability Control]: Notes

WARNING: This page is about a different car, the 2007 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

DTC C1222 will be detected when a malfunctioning ABS wheel-speed sensor cannot be specified.

DTC C1222 POSSIBLE CAUSE

DTC C1222	ABS wheel-speed sensor (slip monitor) system
DETECTION CONDITION	Difference between any vehicle wheel speeds exceeds specification when driving at a constant speed. ABS control operates for 60 s or more.
POSSIBLE CAUSE	ABS wheel-speed sensor malfunction (low output, metal shavings on sensor) ABS sensor rotor malfunction (chipping of sensor rotor teeth) Poor installation of ABS wheel-speed sensor and/or sensor rotor (If the sensor rotor is installed at an angle, it may cause output of abnormal wave pattern at high speeds.) Excessive clearance between the ABS wheel-speed sensor and sensor rotor
Courtesy of MAZDA MOTORS CORP.