C0041

Code

DAEWOO C — Chassis

Right front wheel speed sensor circuit malfunction

Brand: DAEWOO

Type: C — Chassis

Views: UK: 5 EN: 5 RU: 3

AI status

Completed

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Page language: EN

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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