What it means
The vehicle bus reports loss of communication with the haptic control module. Vibration feedback in steering wheel, seat or pedals (lane-departure, blind-spot, parking) stops being delivered.
How it works
The Haptic Control Module manages vibration feedback routed to devices such as the steering wheel, seat, or pedals. The vehicle bus monitors its availability, and this code sets when the module stops responding, so related alerts may no longer produce vibration.
Common causes
Most likely first.
- Bus wiring open or shorted
- Module without power or ground
- Module failed
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
How to diagnose it
- Scan all modules and record communication codes and freeze-frame data to see whether the Haptic Control Module alone is offline.
- Check which vibration alerts or feedback functions have stopped, and verify that the related driver-assistance features report their own status.
- Inspect the Haptic Control Module connector and nearby bus wiring for loose connections, corrosion, or damage.
- Check the module's power and ground according to the manufacturer's procedure.
- Test the bus circuit to the Haptic Control Module for opens or shorts before replacing it.
Common fixes
- Reconnect or clean a loose or corroded module connector.
- Repair damaged bus wiring to the Haptic Control Module.
- Restore the module's power or ground supply.
- Replace the Haptic Control Module if its supplies and bus wiring pass checks but it remains unresponsive.
Can I keep driving?
You can generally drive if the vehicle has no other safety system warnings, but do not rely on vibration as your only lane, blind-spot, or parking alert. Use the visual or audible warnings and take extra care while the feedback is unavailable.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.