OBD-II code · Network
U0246 Lost Communication With Seat Control Module E
ECU lost communication with seat control module E (driver seat with memory/heating/ventilation). A communication loss with this module breaks any function relying on its data — diagnostic tools may show 'no response' and dependent modules can fall into limp mode.
Is it safe to drive with U0246?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule unpowered
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
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
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Seat Module E, Can Bus
Related codes
- U0208Lost Communication With Seat Control Module A
- U0209Lost Communication With Seat Control Module B
- U0210Lost Communication With Seat Control Module C
- U0211Lost Communication With Seat Control Module D
- U0247Lost Communication With Seat Control Module F
- U024BLost Communication With Seat Control Module G
- U024CLost Communication With Seat Control Module H
- U024DLost Communication With Seat Control Module J
- U0277Lost Communication With Seat Control Module K
- U0278Lost Communication With Seat Control Module L
- U0243Lost Communication With Parking Assist Control Module B
- U0244Lost Communication With Running Board Control Module A
- U0245Lost Communication With Entertainment Control Module - Front
- U0248Lost Communication With Remote Accessory Module
- U0249Lost Communication With Entertainment Control Module - Rear B
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.