Network
generic / SAE
U0116
Lost Communication with Steering Effort Control Module
The Steering Effort Control Module has stopped transmitting on the vehicle data bus, so other control units no longer receive its messages. Speed-dependent steering assist is lost, changing the steering feel. Typical causes are loss of power or ground at the module, an open or shorted CAN/LIN bus wire, a connector fault, or an internal module failure.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number1 / 16
Possible causes
- Steering effort module unpowered high
- CAN wiring to steering effort module broken medium
- Gateway module routing CAN messages incorrectly low
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
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 100–1800 €
- Estimated time: 1–5 h
- Component: steering effort module
- Component: can bus wiring
- MIL / check engine light
Sources
References
sae:J2012