P0833Generic code

P0833 Code: Clutch Pedal Switch B Circuit

The P0833 code means there is an electrical fault in the circuit of clutch pedal switch B. The main effect is a cruise control or start-stop system that is disabled. Check the connector and wiring first, because they fail as often as the switch.

Severity
Medium
Can I keep driving?
Yes, but with caution
Estimated cost
$20 to $250
Difficulty
Medium
System
Transmission
Applies to
All OBD2 vehicles

Updated Reviewed by Renzo Chacca

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What the P0833 code means

Some vehicles have two switches on the clutch pedal: one to allow the engine to start, and another (B) for the cruise control or to detect the pedal at the middle of its travel.

It is a switch: the computer sees a high or low voltage depending on its position. A circuit fault, the P0833 code, can come from the switch, the wiring or the power supply.

If the B signal fails, the cruise control or the automatic start-stop system usually stops working.

Always start with the simplest items: fuse, relay and connector. Then check power, ground and signal with the component connected (using back-probes), and finally the continuity of each wire up to the computer. Only if all of that is good should you replace the component.

P0833 code symptoms

  • Check engine light on.
  • Cruise control or start-stop disabled.

Likely causes of the P0833 code

  1. Damaged or corroded connector. The most frequent cause.
  2. Wiring cut or shorted between the switch and the computer.
  3. Failed switch, open or shorted internally.
  4. Missing power reference. Check whether other sensors are also failing.
  5. Computer. Uncommon; rule out everything above first.

How to diagnose the P0833 code step by step

  1. Read the switch value on the scan tool and compare it with what is expected.
  2. Inspect the connector for corrosion, water or loose pins.
  3. Check power and ground with the key on: a correct reference and less than 0.1 V of drop on the ground.
  4. Measure the signal with the connector plugged in and see whether it changes with the condition.
  5. Do the wiggle test on the harness with the scan tool in graphing mode.
  6. Check the continuity of each wire up to the computer (under 1 ohm).
  7. Compare switches A and B on the scan tool as you press the pedal.

How to fix the P0833 code

  • Repair the connector or the wiring.
  • Replace the switch if the tests confirm it.
  • Correct the real condition, if there is one.
  • Clear the codes and verify with a road test.

Technical reference data

  • The switch or sensor is powered from the computer: check the manual for the values.
  • These are approximate values: check the manufacturer data for your vehicle.

Brand-specific notes

The letter assignment and the location of the component change from one manufacturer to another, so check the manual for your vehicle.

Frequently asked questions about P0833

What does the P0833 code mean?
It is a generic OBD2 code that means there is an electrical fault in the circuit of clutch pedal switch B. The cause can be the switch, its wiring or its power supply.
Can I drive with a P0833 code?
Yes, with caution. The cruise control or the start-stop system may stop working until it is repaired.
Does the switch have to be replaced?
Only if the tests confirm it. The connector and the wiring fail just as often.
What does clutch switch B do?
Some vehicles have two switches on the clutch pedal: one to allow the engine to start, and another (B) for the cruise control or to detect the pedal at the middle of its travel.
How much does it cost to fix P0833?
As a rough guide, between $20 and $250.
Will a P0833 code clear itself?
It can go out if the connection was only loose or damp for a moment. A damaged connector, wire or switch will bring the P0833 code back.
What is the most common cause of P0833?
A damaged or corroded connector. Check it and the wiring before you buy a switch.

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