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Home / DTC / P0835 — Clutch Pedal Switch B Circuit High

P0835 — Clutch Pedal Switch B Circuit High

Detailed page for trouble code P0835.

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Code

P0835

Generic P — Powertrain

Clutch Pedal Switch B Circuit High

Brand: Generic
Type: P — Powertrain
Views: UK: 10 EN: 31 RU: 24
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open circuit in clutch pedal switch B wiring (broken wire, disconnected connector)
  • Poor or corroded connector or terminal at the switch or PCM harness
  • Short to battery/ignition feed (voltage backfeed into the switch circuit)
  • Faulty clutch pedal switch B (internal failure)
  • PCM or body/control module input fault (rare)
  • Damaged wiring insulation causing intermittent contact or high resistance

Symptoms

  • Engine may not crank or start on vehicles with clutch-interlock start (start-inhibit)
  • Cruise control or shift-interlock systems may not operate correctly
  • Malfunction Indicator Lamp (MIL) or transmission/engine warning may be illuminated
  • Intermittent no-start or no-crank conditions when clutch is pressed

What to check

  • Read and record freeze frame and live data with a scan tool (verify clutch switch B status)
  • Visually inspect clutch pedal switch B, connector, and wiring for damage, corrosion, or looseness
  • Backprobe the switch connector and monitor voltage/continuity while operating the pedal
  • Check for Diagnostic Trouble Codes (DTCs) related to clutch switches (A/B) or transmission interlock
  • Inspect related fuses and grounds for integrity

Signal parameters

  • Typical expected voltages (may vary by manufacturer): closed (switch ON) ≈ 0–1 V (pulled to ground) or near battery voltage depending on design; open (switch OFF) ≈ 4–5 V (pulled up)
  • For a ‘Circuit High’ DTC: measured voltage on switch circuit is higher than the module’s allowed upper threshold (often >4.5 V) when the circuit should be low
  • Continuity: closed switch should show low resistance (near 0 Ω) between switch terminals; open should show high/OL

Diagnostic algorithm

  1. Connect a scan tool, confirm P0835 and note any additional clutch/shift related codes. Record live data for clutch switch B while operating the pedal.
  2. Visually inspect the switch, connector, and harness for corrosion, damage, or loose pins. Repair any obvious problems, then retest.
  3. Backprobe the switch connector. With ignition ON, measure the reference voltage/pull-up and ground pins. Verify voltage changes when operating the pedal. Compare to expected ranges for the vehicle.
  4. Check continuity between the switch and the PCM input pin with ignition OFF. Wiggle wiring to look for intermittent faults.
  5. If the circuit reads high (near battery voltage) when it should be low, check for a short to battery/ignition feed or open ground.
  6. If wiring and connector are good but signal still incorrect, bench-test or replace the clutch pedal switch and retest.
  7. If replacement switch does not clear issue, inspect PCM input and grounds; consider module diagnostic or professional scope trace for intermittent/complex faults.
  8. Clear codes and perform a functional test and short road test to confirm repair.

Likely causes

  • Disconnected or corroded connector at the clutch pedal switch
  • Broken conductor between the switch and the module (pinched or chafed wiring)
  • Switch stuck in open position or internal contact failure
  • Aftermarket or recent repairs left connector mis-seated or pins bent

Fault status

⚠️ Status
Clutch Pedal Switch B circuit voltage above expected range (open/high). The control module is receiving an abnormally high signal from switch B; inspect switch, wiring, and connectors.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-1.5 hours

Similar codes

P0836 P0705 P0700
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Code

P0835

LAND ROVER P — Powertrain

Clutch pedal switch circuit B high

Brand: LAND ROVER
Type: P — Powertrain
Views: UK: 2 EN: 11 RU: 7
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open circuit in clutch pedal switch B wiring (broken wire, disconnected connector)
  • Poor or corroded connector or terminal at the switch or PCM harness
  • Short to battery/ignition feed (voltage backfeed into the switch circuit)
  • Faulty clutch pedal switch B (internal failure)
  • PCM or body/control module input fault (rare)
  • Damaged wiring insulation causing intermittent contact or high resistance

Symptoms

  • Engine may not crank or start on vehicles with clutch-interlock start (start-inhibit)
  • Cruise control or shift-interlock systems may not operate correctly
  • Malfunction Indicator Lamp (MIL) or transmission/engine warning may be illuminated
  • Intermittent no-start or no-crank conditions when clutch is pressed

What to check

  • Read and record freeze frame and live data with a scan tool (verify clutch switch B status)
  • Visually inspect clutch pedal switch B, connector, and wiring for damage, corrosion, or looseness
  • Backprobe the switch connector and monitor voltage/continuity while operating the pedal
  • Check for Diagnostic Trouble Codes (DTCs) related to clutch switches (A/B) or transmission interlock
  • Inspect related fuses and grounds for integrity

Signal parameters

  • Typical expected voltages (may vary by manufacturer): closed (switch ON) ≈ 0–1 V (pulled to ground) or near battery voltage depending on design; open (switch OFF) ≈ 4–5 V (pulled up)
  • For a ‘Circuit High’ DTC: measured voltage on switch circuit is higher than the module’s allowed upper threshold (often >4.5 V) when the circuit should be low
  • Continuity: closed switch should show low resistance (near 0 Ω) between switch terminals; open should show high/OL

Diagnostic algorithm

  1. Connect a scan tool, confirm P0835 and note any additional clutch/shift related codes. Record live data for clutch switch B while operating the pedal.
  2. Visually inspect the switch, connector, and harness for corrosion, damage, or loose pins. Repair any obvious problems, then retest.
  3. Backprobe the switch connector. With ignition ON, measure the reference voltage/pull-up and ground pins. Verify voltage changes when operating the pedal. Compare to expected ranges for the vehicle.
  4. Check continuity between the switch and the PCM input pin with ignition OFF. Wiggle wiring to look for intermittent faults.
  5. If the circuit reads high (near battery voltage) when it should be low, check for a short to battery/ignition feed or open ground.
  6. If wiring and connector are good but signal still incorrect, bench-test or replace the clutch pedal switch and retest.
  7. If replacement switch does not clear issue, inspect PCM input and grounds; consider module diagnostic or professional scope trace for intermittent/complex faults.
  8. Clear codes and perform a functional test and short road test to confirm repair.

Likely causes

  • Disconnected or corroded connector at the clutch pedal switch
  • Broken conductor between the switch and the module (pinched or chafed wiring)
  • Switch stuck in open position or internal contact failure
  • Aftermarket or recent repairs left connector mis-seated or pins bent

Fault status

⚠️ Status
Clutch Pedal Switch B circuit voltage above expected range (open/high). The control module is receiving an abnormally high signal from switch B; inspect switch, wiring, and connectors.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-1.5 hours

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Send to email
Code

P0835

MERCEDES-BENZ P — Powertrain

Clutch Position Switch B Circuit High

Brand: MERCEDES-BENZ
Type: P — Powertrain
Views: UK: 10 EN: 22 RU: 15
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open circuit in clutch pedal switch B wiring (broken wire, disconnected connector)
  • Poor or corroded connector or terminal at the switch or PCM harness
  • Short to battery/ignition feed (voltage backfeed into the switch circuit)
  • Faulty clutch pedal switch B (internal failure)
  • PCM or body/control module input fault (rare)
  • Damaged wiring insulation causing intermittent contact or high resistance

Symptoms

  • Engine may not crank or start on vehicles with clutch-interlock start (start-inhibit)
  • Cruise control or shift-interlock systems may not operate correctly
  • Malfunction Indicator Lamp (MIL) or transmission/engine warning may be illuminated
  • Intermittent no-start or no-crank conditions when clutch is pressed

What to check

  • Read and record freeze frame and live data with a scan tool (verify clutch switch B status)
  • Visually inspect clutch pedal switch B, connector, and wiring for damage, corrosion, or looseness
  • Backprobe the switch connector and monitor voltage/continuity while operating the pedal
  • Check for Diagnostic Trouble Codes (DTCs) related to clutch switches (A/B) or transmission interlock
  • Inspect related fuses and grounds for integrity

Signal parameters

  • Typical expected voltages (may vary by manufacturer): closed (switch ON) ≈ 0–1 V (pulled to ground) or near battery voltage depending on design; open (switch OFF) ≈ 4–5 V (pulled up)
  • For a ‘Circuit High’ DTC: measured voltage on switch circuit is higher than the module’s allowed upper threshold (often >4.5 V) when the circuit should be low
  • Continuity: closed switch should show low resistance (near 0 Ω) between switch terminals; open should show high/OL

Diagnostic algorithm

  1. Connect a scan tool, confirm P0835 and note any additional clutch/shift related codes. Record live data for clutch switch B while operating the pedal.
  2. Visually inspect the switch, connector, and harness for corrosion, damage, or loose pins. Repair any obvious problems, then retest.
  3. Backprobe the switch connector. With ignition ON, measure the reference voltage/pull-up and ground pins. Verify voltage changes when operating the pedal. Compare to expected ranges for the vehicle.
  4. Check continuity between the switch and the PCM input pin with ignition OFF. Wiggle wiring to look for intermittent faults.
  5. If the circuit reads high (near battery voltage) when it should be low, check for a short to battery/ignition feed or open ground.
  6. If wiring and connector are good but signal still incorrect, bench-test or replace the clutch pedal switch and retest.
  7. If replacement switch does not clear issue, inspect PCM input and grounds; consider module diagnostic or professional scope trace for intermittent/complex faults.
  8. Clear codes and perform a functional test and short road test to confirm repair.

Likely causes

  • Disconnected or corroded connector at the clutch pedal switch
  • Broken conductor between the switch and the module (pinched or chafed wiring)
  • Switch stuck in open position or internal contact failure
  • Aftermarket or recent repairs left connector mis-seated or pins bent

Fault status

⚠️ Status
Clutch Pedal Switch B circuit voltage above expected range (open/high). The control module is receiving an abnormally high signal from switch B; inspect switch, wiring, and connectors.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-1.5 hours

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C 230K Years: 2000 Manual in English Sections: 17,064 AI chunks: 17,064
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MERCEDES-BENZ · C 230K · 2000 · (Motor 111)
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MERCEDES-BENZ 2000 C 280 (Motor 112)

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C 280 Years: 2000 Manual in English Sections: 17,367 AI chunks: 17,367
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MERCEDES-BENZ · C 280 · 2000 · (Motor 112)
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MERCEDES-BENZ 2000 C 43 AMG (Motor 113)

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C 43 AMG Years: 2000 Manual in English Sections: 16,253 AI chunks: 16,253
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MERCEDES-BENZ · C 43 AMG · 2000 · (Motor 113)
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MERCEDES-BENZ 2000 CL 500 113

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CL 500 Years: 2000 Manual in English Sections: 16,205 AI chunks: 16,205
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MERCEDES-BENZ · CL 500 · 2000 · 113
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MERCEDES-BENZ 2000 CLK 320 (Motor 112)

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CLK 320 Years: 2000 Manual in English Sections: 15,746 AI chunks: 15,746
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MERCEDES-BENZ · CLK 320 · 2000 · (Motor 112)
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MERCEDES-BENZ 2000 CLK 320 Cabriolet (Motor 112)

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CLK 320 Cabriolet Years: 2000 Manual in English Sections: 15,736 AI chunks: 15,736
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MERCEDES-BENZ · CLK 320 Cabriolet · 2000 · (Motor 112)
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MERCEDES-BENZ 2000 CLK 430 (Motor 113)

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CLK 430 Years: 2000 Manual in English Sections: 15,643 AI chunks: 15,643
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MERCEDES-BENZ · CLK 430 · 2000 · (Motor 113)
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