Hall sensor inputs for spoiler end position detection
Supply voltage to J223
Rear spoiler position/final position plausibility via Hall sensors
Parts often involved in B134101
Rear Spoiler Control Module J223
Rear Spoiler Motor V52
Hall sensors for rear spoiler position detection
Comfort System Central Control Module J393
Rear Spoiler Adjustment Switch E127
Rear Spoiler Adjustment Indicator Lamp K242
LIN bus wiring
Don't replace parts until the root cause is confirmed — many of these codes are caused by wiring, a connector or an upstream fault, not the part itself.
Get the confirmed root cause for B134101 — on YOUR vehicle
A code is a symptom, not a diagnosis. AutoDX Pro cross-checks several
independent assessments, pinpoints the actual root cause, gives you the
exact tests to confirm it, and shows the parts — only after the cause is
confirmed. Reads your scan-tool photo and decodes your VIN with open
recalls.
B134101 is a diagnostic trouble code: Adjustment for rear spoiler Electrical malfunction.
What are the common causes of B134101?
Common causes include: Failure of the LIN bus, No current speed signal received, Final positions of the rear spoiler are implausible, Position of the rear spoiler changes without activation of the rear spoiler motor. The exact cause depends on the vehicle — confirm it before replacing parts.
Can I keep driving with B134101?
It depends on the fault and your symptoms. Some causes are minor, others can damage components or affect safety. Get the root cause confirmed before deciding.
How do I fix B134101?
Confirm the actual root cause with targeted tests first, then replace only the part that's at fault. AutoDX Pro gives you the root cause, the exact tests, and the parts for B134101 on your specific vehicle.