1230 code(s) in this category. Page 11 of 52. Select one to see the detailed diagnosis.
Red (U)
A control module that expects to talk to the engine ECU has stopped receiving messages. Most commonly seen by …
The vehicle network has lost the headlamp leveling controller. Automatic leveling is disabled and the lamps st…
The body controller has lost the sunroof / panorama roof module. The roof can no longer be operated electrical…
The infotainment system has lost the antenna / tuner amplifier controller. Radio reception drops, navigation m…
The HVAC controller has lost the auxiliary fuel-fired heater module. Pre-heating cannot be commanded; the heat…
ECU lost communication with headlamp leveling control module B (auto-levelling for HID/LED headlamps).…
The vehicle gateway has lost the on-board computer / fleet telematics PC. Logging, fleet management or driver-…
The infotainment bus has lost the voice assistant / personal assist module. Voice commands and connected conci…
The infotainment system cannot reach the hands-free phone controller. Bluetooth telephony, address book sync a…
The vehicle has lost the telematics module (eCall / Connected Services / TCU). Emergency call, remote services…
ECU lost communication with the tachograph module (commercial vehicle driving-time recorder, EU regulation).…
ECU lost communication with battery charger control module A (on-board charger for HV battery on plug-in hybri…
ECU lost communication with glow plug control module 2 (second module on engines with bank-individual glow con…
ECU lost communication with the direct ozone reduction (DOR) catalyst temperature sensor. A communication loss…