What it means
General electrical fault on the second clutch pedal switch B — provides redundant clutch-state detection (one switch upper end of pedal travel, other lower end) so the ECM can verify both ends of pedal motion. Used for accurate cranking and cruise enable logic.
At a glance
- Usually lights the check-engine light
How it works
Clutch pedal switch B is the second clutch-state input used by the engine control module to cross-check pedal movement and support functions such as starting permission and cruise control. P0833 indicates an electrical fault in switch B's circuit, so its signal may not change reliably or may disagree with the other clutch input.
Common causes
Most likely first.
- Faulty clutch pedal switch B
- Open or short in the switch wiring
- Loose, damaged, or corroded connector
- Misadjusted switch or pedal mechanism
- Fault in the control module
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
How to diagnose it
- Record freeze-frame data and compare live switch B data with switch A while pressing and releasing the clutch pedal to identify whether B fails to change or disagrees.
- Inspect clutch switch B's mounting and connector for misadjustment, looseness, corrosion, or damaged pins.
- Trace switch B's harness for open wires, shorts, or chafing, paying attention to movement near the pedal mechanism.
- Test switch B operation and its circuit continuity using the manufacturer's procedure and specification.
- If switch B and its wiring pass, check the module input and compare both switch signals as specified by the manufacturer.
Common fixes
- Adjust or secure clutch pedal switch B so it is actuated through the correct pedal travel.
- Repair open, shorted, or chafed wiring in the switch B circuit.
- Clean or repair loose or corroded switch B connector terminals.
- Replace clutch pedal switch B if it fails its operation test.
- Repair the module input circuit if testing confirms a fault there.
Can I keep driving?
Starting permission or cruise control may be affected if the module cannot verify clutch movement from switch B. Confirm reliable starting and avoid cruise control until repaired; seek prompt diagnosis if the clutch-related signals cause inconsistent operation.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.