Column Reach Feedback Potentiometer Circuit Failure
The steering column reach adjustment motor has a feedback sensor that tells the car where the column is positioned, and this sensor is broken or disconnected. It's like a volume knob that doesn't send back information about where it's turned.
The ECU monitors the potentiometer voltage feedback from the reach adjustment motor to confirm the column's actual position matches commanded position. The sensor should return a variable voltage signal (typically 0-5V) that changes proportionally as the column moves. If voltage is out of range, missing, or erratic, the ECU detects a circuit failure.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Potentiometer voltage | 0.5V to 4.5V (proportional to position) | Below 0.2V, above 4.8V, or no signal |
| Signal continuity | Smooth linear change during movement | Erratic jumps, disconnection, or short to ground |
Code B2328 is a low-severity fault. Your vehicle is generally safe to drive to a workshop for diagnosis. However, do not ignore it indefinitely — low-severity codes often indicate developing problems that become expensive if neglected. Book a diagnostic appointment within 2–4 weeks. If you notice any additional symptoms (rough running, power loss, unusual smells), treat it as higher priority.
Once the fault is repaired, B2328 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.