Fluid condition and solenoid-pack resistance were normal, but the red feed wire to the pack had intermittent power. The relay control and ground paths passed, leaving the.
Body-module communication was intermittent without stored codes. CAN-B switched from zero to roughly seven volts instead of the expected zero-to-five pattern. Unplugging.
C0221 and C0040 directed attention to wheel-speed input. On a controlled drive, the right-front PID dropped out and became erratic while the other wheels stayed plausible. Hub.