Clutch Pedal Switch B Circuit High
The ECU detects that the clutch pedal switch signal is stuck at a high voltage when it should be low, like a light switch that won't report when you've turned it off. This means the switch circuit has an open connection or the switch itself is faulty.
The ECU monitors the clutch pedal switch circuit voltage to detect when the driver engages or disengages the clutch. The switch should pull the signal to ground (low voltage ~0V) when pressed and float high (~5V) when released. A persistent high voltage indicates the switch cannot complete the ground circuit.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Clutch Switch Signal Voltage | 0-1V when pressed, 4.5-5V when released | Remains above 3.5V when pedal pressed for extended period |
| Circuit Continuity | Less than 100 ohms resistance when grounded | Greater than 1000 ohms or open circuit detected |
Code P0835 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P0835 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.