Code
C0041
DAEWOO
C — Chassis
Right front wheel speed sensor circuit malfunction
Views:
UK: 4
EN: 5
RU: 3
AI status
Completed
Completed
100%
Causes
- Open or short in right front wheel speed sensor wiring or connector
- Corroded or loose sensor connector
- Failed wheel speed sensor (Hall effect or magnetic pickup)
- Damaged or missing tone ring (reluctor) on hub/axle
- Contaminants or metal debris on the sensor
- Faulty ABS control module or poor module ground
Symptoms
- ABS warning lamp illuminated
- Traction control/ESC warning lamp may also illuminate or be disabled
- ABS intervention abnormal or inoperative; possible longer stopping distances during ABS activation
- Intermittent or no wheel speed reading for right front in scan tool live data
- Possible diagnostic trouble codes for other systems that use wheel speed (e.g., traction control)
- Occasional unusual brake feel when ABS engages
What to check
- Verify ABS/traction control lamps and read stored codes and freeze-frame with a scan tool
- Visually inspect right front wheel sensor, connector, wiring harness and tone ring for damage, debris or corrosion
- Check connector pins for corrosion, bent pins, moisture or pushed-out terminals
- Measure sensor resistance with a multimeter (compare to spec) and check for short to ground/power
- Backprobe sensor signal and reference while spinning the wheel or using an oscilloscope to view waveform
- Check for continuity and shorts between sensor wires and chassis ground or battery (+)
Signal parameters
- Passive (magnetic) sensor: AC output increases with wheel speed; typical idle/low-speed output ~0.1–2 V AC, waveform sinusoidal
- Active (Hall or PM) sensor: requires reference voltage (commonly ~5 V) and provides digital square pulses from ~0–5 V; frequency proportional to wheel speed
- Typical sensor resistance (passive type) often in the range of several hundred to a few thousand ohms — check vehicle specification
- Pulse frequency: increases with wheel RPM (can range from a few Hz at crawl speed to kHz at highway speed)
- Open circuit: infinite resistance; short to ground or battery may show near 0 Ω or constant voltage on signal line
Diagnostic algorithm
- Connect a diagnostic scan tool and record C0041 and any related codes; note live data for right front wheel speed sensor while stationary and while wheel is rotated.
- Visually inspect the right front sensor, tone ring (reluctor), mounting area and wiring for damage, looseness, contamination or foreign material. Repair or clean as required.
- Disconnect the sensor connector and inspect pins for corrosion, bent terminals or moisture. Clean and reconnect; ensure secure fit.
- With ignition ON (engine off), measure sensor connector reference voltage (if active type) and sensor resistance. Compare values to manufacturer specification.
- If passive type, spin the wheel (jack up vehicle and safely support on stands) and measure AC voltage across sensor output; if active type, backprobe the signal wire and observe pulses with a multimeter (frequency) or oscilloscope (waveform).
- Wiggle the wiring harness and connectors while monitoring the signal to check for intermittent opens/shorts.
- Check continuity from the sensor connector back to the ABS module connector and verify proper grounding of the ABS module.
- Inspect the tone ring for missing teeth, cracks, or heavy rust/contamination; repair or replace hub/tone ring if damaged or misaligned.
- If sensor waveform, resistance and wiring are good but fault persists, consider ABS module input circuit test or swap with known good sensor (if applicable) to isolate the fault.
- After repair or replacement, clear codes, perform a road test and monitor right front wheel speed signal and system operation to confirm the fault is resolved.
Likely causes
- Broken or corroded connector at the right front sensor
- Failed right front wheel speed sensor
- Damaged or dirty tone ring on the right front hub/drive flange
- Open/short in the sensor signal or reference wire between sensor and ABS module
Fault status
Status
Right front wheel speed sensor circuit malfunction detected. ABS/traction control lamp may be illuminated and right front wheel speed reading may be missing or erratic.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
C0041
Generic
C — Chassis
Brake Pedal Switch B
Views:
UK: 21
EN: 34
RU: 29
AI status
Completed
Completed
100%
Causes
- Open or short in right front wheel speed sensor wiring or connector
- Corroded or loose sensor connector
- Failed wheel speed sensor (Hall effect or magnetic pickup)
- Damaged or missing tone ring (reluctor) on hub/axle
- Contaminants or metal debris on the sensor
- Faulty ABS control module or poor module ground
Symptoms
- ABS warning lamp illuminated
- Traction control/ESC warning lamp may also illuminate or be disabled
- ABS intervention abnormal or inoperative; possible longer stopping distances during ABS activation
- Intermittent or no wheel speed reading for right front in scan tool live data
- Possible diagnostic trouble codes for other systems that use wheel speed (e.g., traction control)
- Occasional unusual brake feel when ABS engages
What to check
- Verify ABS/traction control lamps and read stored codes and freeze-frame with a scan tool
- Visually inspect right front wheel sensor, connector, wiring harness and tone ring for damage, debris or corrosion
- Check connector pins for corrosion, bent pins, moisture or pushed-out terminals
- Measure sensor resistance with a multimeter (compare to spec) and check for short to ground/power
- Backprobe sensor signal and reference while spinning the wheel or using an oscilloscope to view waveform
- Check for continuity and shorts between sensor wires and chassis ground or battery (+)
Signal parameters
- Passive (magnetic) sensor: AC output increases with wheel speed; typical idle/low-speed output ~0.1–2 V AC, waveform sinusoidal
- Active (Hall or PM) sensor: requires reference voltage (commonly ~5 V) and provides digital square pulses from ~0–5 V; frequency proportional to wheel speed
- Typical sensor resistance (passive type) often in the range of several hundred to a few thousand ohms — check vehicle specification
- Pulse frequency: increases with wheel RPM (can range from a few Hz at crawl speed to kHz at highway speed)
- Open circuit: infinite resistance; short to ground or battery may show near 0 Ω or constant voltage on signal line
Diagnostic algorithm
- Connect a diagnostic scan tool and record C0041 and any related codes; note live data for right front wheel speed sensor while stationary and while wheel is rotated.
- Visually inspect the right front sensor, tone ring (reluctor), mounting area and wiring for damage, looseness, contamination or foreign material. Repair or clean as required.
- Disconnect the sensor connector and inspect pins for corrosion, bent terminals or moisture. Clean and reconnect; ensure secure fit.
- With ignition ON (engine off), measure sensor connector reference voltage (if active type) and sensor resistance. Compare values to manufacturer specification.
- If passive type, spin the wheel (jack up vehicle and safely support on stands) and measure AC voltage across sensor output; if active type, backprobe the signal wire and observe pulses with a multimeter (frequency) or oscilloscope (waveform).
- Wiggle the wiring harness and connectors while monitoring the signal to check for intermittent opens/shorts.
- Check continuity from the sensor connector back to the ABS module connector and verify proper grounding of the ABS module.
- Inspect the tone ring for missing teeth, cracks, or heavy rust/contamination; repair or replace hub/tone ring if damaged or misaligned.
- If sensor waveform, resistance and wiring are good but fault persists, consider ABS module input circuit test or swap with known good sensor (if applicable) to isolate the fault.
- After repair or replacement, clear codes, perform a road test and monitor right front wheel speed signal and system operation to confirm the fault is resolved.
Likely causes
- Broken or corroded connector at the right front sensor
- Failed right front wheel speed sensor
- Damaged or dirty tone ring on the right front hub/drive flange
- Open/short in the sensor signal or reference wire between sensor and ABS module
Fault status
Status
Right front wheel speed sensor circuit malfunction detected. ABS/traction control lamp may be illuminated and right front wheel speed reading may be missing or erratic.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
C0041
HUMMER
C — Chassis
Right Front Wheel Speed Sensor Circuit Range/Performance (EBCM)
Views:
UK: 15
EN: 16
RU: 10
AI status
Completed
Completed
100%
Causes
- Open or short in right front wheel speed sensor wiring or connector
- Corroded or loose sensor connector
- Failed wheel speed sensor (Hall effect or magnetic pickup)
- Damaged or missing tone ring (reluctor) on hub/axle
- Contaminants or metal debris on the sensor
- Faulty ABS control module or poor module ground
Symptoms
- ABS warning lamp illuminated
- Traction control/ESC warning lamp may also illuminate or be disabled
- ABS intervention abnormal or inoperative; possible longer stopping distances during ABS activation
- Intermittent or no wheel speed reading for right front in scan tool live data
- Possible diagnostic trouble codes for other systems that use wheel speed (e.g., traction control)
- Occasional unusual brake feel when ABS engages
What to check
- Verify ABS/traction control lamps and read stored codes and freeze-frame with a scan tool
- Visually inspect right front wheel sensor, connector, wiring harness and tone ring for damage, debris or corrosion
- Check connector pins for corrosion, bent pins, moisture or pushed-out terminals
- Measure sensor resistance with a multimeter (compare to spec) and check for short to ground/power
- Backprobe sensor signal and reference while spinning the wheel or using an oscilloscope to view waveform
- Check for continuity and shorts between sensor wires and chassis ground or battery (+)
Signal parameters
- Passive (magnetic) sensor: AC output increases with wheel speed; typical idle/low-speed output ~0.1–2 V AC, waveform sinusoidal
- Active (Hall or PM) sensor: requires reference voltage (commonly ~5 V) and provides digital square pulses from ~0–5 V; frequency proportional to wheel speed
- Typical sensor resistance (passive type) often in the range of several hundred to a few thousand ohms — check vehicle specification
- Pulse frequency: increases with wheel RPM (can range from a few Hz at crawl speed to kHz at highway speed)
- Open circuit: infinite resistance; short to ground or battery may show near 0 Ω or constant voltage on signal line
Diagnostic algorithm
- Connect a diagnostic scan tool and record C0041 and any related codes; note live data for right front wheel speed sensor while stationary and while wheel is rotated.
- Visually inspect the right front sensor, tone ring (reluctor), mounting area and wiring for damage, looseness, contamination or foreign material. Repair or clean as required.
- Disconnect the sensor connector and inspect pins for corrosion, bent terminals or moisture. Clean and reconnect; ensure secure fit.
- With ignition ON (engine off), measure sensor connector reference voltage (if active type) and sensor resistance. Compare values to manufacturer specification.
- If passive type, spin the wheel (jack up vehicle and safely support on stands) and measure AC voltage across sensor output; if active type, backprobe the signal wire and observe pulses with a multimeter (frequency) or oscilloscope (waveform).
- Wiggle the wiring harness and connectors while monitoring the signal to check for intermittent opens/shorts.
- Check continuity from the sensor connector back to the ABS module connector and verify proper grounding of the ABS module.
- Inspect the tone ring for missing teeth, cracks, or heavy rust/contamination; repair or replace hub/tone ring if damaged or misaligned.
- If sensor waveform, resistance and wiring are good but fault persists, consider ABS module input circuit test or swap with known good sensor (if applicable) to isolate the fault.
- After repair or replacement, clear codes, perform a road test and monitor right front wheel speed signal and system operation to confirm the fault is resolved.
Likely causes
- Broken or corroded connector at the right front sensor
- Failed right front wheel speed sensor
- Damaged or dirty tone ring on the right front hub/drive flange
- Open/short in the sensor signal or reference wire between sensor and ABS module
Fault status
Status
Right front wheel speed sensor circuit malfunction detected. ABS/traction control lamp may be illuminated and right front wheel speed reading may be missing or erratic.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
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Code
C0041
HYUNDAI
C — Chassis
Brake Pedal Switch “B” (Subfault)
Views:
UK: 20
EN: 28
RU: 17
AI status
Completed
Completed
100%
Causes
- Open or short in right front wheel speed sensor wiring or connector
- Corroded or loose sensor connector
- Failed wheel speed sensor (Hall effect or magnetic pickup)
- Damaged or missing tone ring (reluctor) on hub/axle
- Contaminants or metal debris on the sensor
- Faulty ABS control module or poor module ground
Symptoms
- ABS warning lamp illuminated
- Traction control/ESC warning lamp may also illuminate or be disabled
- ABS intervention abnormal or inoperative; possible longer stopping distances during ABS activation
- Intermittent or no wheel speed reading for right front in scan tool live data
- Possible diagnostic trouble codes for other systems that use wheel speed (e.g., traction control)
- Occasional unusual brake feel when ABS engages
What to check
- Verify ABS/traction control lamps and read stored codes and freeze-frame with a scan tool
- Visually inspect right front wheel sensor, connector, wiring harness and tone ring for damage, debris or corrosion
- Check connector pins for corrosion, bent pins, moisture or pushed-out terminals
- Measure sensor resistance with a multimeter (compare to spec) and check for short to ground/power
- Backprobe sensor signal and reference while spinning the wheel or using an oscilloscope to view waveform
- Check for continuity and shorts between sensor wires and chassis ground or battery (+)
Signal parameters
- Passive (magnetic) sensor: AC output increases with wheel speed; typical idle/low-speed output ~0.1–2 V AC, waveform sinusoidal
- Active (Hall or PM) sensor: requires reference voltage (commonly ~5 V) and provides digital square pulses from ~0–5 V; frequency proportional to wheel speed
- Typical sensor resistance (passive type) often in the range of several hundred to a few thousand ohms — check vehicle specification
- Pulse frequency: increases with wheel RPM (can range from a few Hz at crawl speed to kHz at highway speed)
- Open circuit: infinite resistance; short to ground or battery may show near 0 Ω or constant voltage on signal line
Diagnostic algorithm
- Connect a diagnostic scan tool and record C0041 and any related codes; note live data for right front wheel speed sensor while stationary and while wheel is rotated.
- Visually inspect the right front sensor, tone ring (reluctor), mounting area and wiring for damage, looseness, contamination or foreign material. Repair or clean as required.
- Disconnect the sensor connector and inspect pins for corrosion, bent terminals or moisture. Clean and reconnect; ensure secure fit.
- With ignition ON (engine off), measure sensor connector reference voltage (if active type) and sensor resistance. Compare values to manufacturer specification.
- If passive type, spin the wheel (jack up vehicle and safely support on stands) and measure AC voltage across sensor output; if active type, backprobe the signal wire and observe pulses with a multimeter (frequency) or oscilloscope (waveform).
- Wiggle the wiring harness and connectors while monitoring the signal to check for intermittent opens/shorts.
- Check continuity from the sensor connector back to the ABS module connector and verify proper grounding of the ABS module.
- Inspect the tone ring for missing teeth, cracks, or heavy rust/contamination; repair or replace hub/tone ring if damaged or misaligned.
- If sensor waveform, resistance and wiring are good but fault persists, consider ABS module input circuit test or swap with known good sensor (if applicable) to isolate the fault.
- After repair or replacement, clear codes, perform a road test and monitor right front wheel speed signal and system operation to confirm the fault is resolved.
Likely causes
- Broken or corroded connector at the right front sensor
- Failed right front wheel speed sensor
- Damaged or dirty tone ring on the right front hub/drive flange
- Open/short in the sensor signal or reference wire between sensor and ABS module
Fault status
Status
Right front wheel speed sensor circuit malfunction detected. ABS/traction control lamp may be illuminated and right front wheel speed reading may be missing or erratic.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
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Send to email