OBD-II code · Chassis
C0700 Active Steering Module Communication
A communication fault between the chassis control module and the active steering module has been detected. Active steering varies the steering ratio with speed, and a fault disables this assistance and may store secondary codes in other modules.
Is it safe to drive with C0700?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyCommunication bus fault
- PossibleActive steering module failed
- Less likelyPower supply or ground fault to module
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Active Steering Module, Communication Bus, Chassis Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.