Home >> Jaguar >> 2014 >> XK Base, 2D Convertible >> Repair and Diagnosis >> General Information >> DTC Index >> Diagnostic Trouble Code Index DTC: Adaptive Damping Control Module (SUMB) -- XK/X150 >> Diagnostic Trouble Code Index DTC: Adaptive Damping Control Module (SUMB) >> Description And Operation >> Adaptive Damping Module [SUMB] >> DTC C1030-26: Left Rear vertical acceleration sensor - Signal rate of change below threshold >> Possible Causes