P0835
UniversalClutch Pedal Switch B Circuit High indicates that the Powertrain Control Module (PCM) has detected a voltage reading in the 'B' circuit of the clutch pedal position switch that is higher than the specified range.
Medium SeverityThis code signifies that the vehicle's computer has detected an electrical issue with the Clutch Pedal Position Switch, specifically a high voltage signal in its 'B' circuit. This electrical malfunction can prevent the engine from starting or cause issues with cruise control operation, as the PCM relies on this switch to determine clutch pedal engagement.
⚠️ Before You Begin (Safety First)
Always ensure the vehicle is in Neutral and the parking brake is engaged before working on it. Disconnect the battery's negative terminal before performing any electrical repairs to prevent accidental shorts or injury. Use appropriate jack stands if the vehicle needs to be raised.
Common Symptoms
- Engine will not crank or start
- Cruise control inoperable
- Check Engine Light (CEL) illuminated
- Remote start function disabled (if equipped)
Common Causes
- Faulty Clutch Pedal Position Switch (Switch B)
- Corroded or loose electrical connectors at the switch
- Damaged or shorted wiring in the switch circuit
- Faulty Powertrain Control Module (PCM) (rare)
Frequently reported on: General/Universal (Manual Transmission Vehicles)
Diagnostic Steps
- Retrieve all stored DTCs using an OBD-II scanner.
- Visually inspect the Clutch Pedal Position Switch B and its wiring harness for signs of damage, corrosion, or loose connections.
- Check for proper mechanical operation of the switch; ensure it's not stuck or misaligned.
- Test the switch for continuity and proper voltage signals using a multimeter according to service manual specifications.
- If the switch is faulty, replace it with a new one.
- Clear the DTCs and test drive the vehicle to ensure the repair is successful and the code does not return.
👨🔧 When to Call a Professional
If, after inspecting and potentially replacing the clutch pedal switch, the code persists or if there are intermittent electrical issues that seem unrelated to the switch itself, it's time to consult a professional technician. This could indicate a more complex wiring harness problem or an issue with the PCM.
Commonly Asked Questions
Can I drive with a P0835 code?
It depends. If the engine starts, you might be able to drive, but cruise control will likely be disabled, and there's a risk of being stranded if the engine fails to start again.
Is the Clutch Pedal Position Switch hard to replace?
For many vehicles, it's a relatively straightforward DIY repair, often located near the clutch pedal assembly and held by clips or a single bolt. Access can be tight, however.
How can I confirm the switch is the problem?
You can test the switch's continuity and voltage signals using a multimeter, comparing readings to your vehicle's service manual specifications. A faulty switch won't show proper changes in signal when pressed.
Can this code affect my automatic transmission?
No, this code specifically refers to the clutch pedal position switch, which is only present in vehicles with a manual transmission.
What if replacing the switch doesn't fix it?
If the code persists after replacing the switch, the issue likely lies in the wiring harness leading to the switch, or rarely, with the Powertrain Control Module (PCM) itself. Further diagnostic testing of the circuit is needed.