Code
C1352
Generic
C — Chassis
ABS wheel speed sensor circuit fault — rear right
Views:
UK: 1
EN: 3
RU: 1
AI status
Completed
Completed
100%
Causes
- Open or short in rear right wheel speed sensor wiring
- Corroded, loose or damaged sensor connector
- Failed wheel speed sensor (active or passive)
- Damaged or missing tone/reluctor ring on hub/axle
- Wheel bearing contamination or excessive play
- Intermittent contact from wiring harness chafing or broken wire
Symptoms
- ABS warning lamp illuminated
- Traction control/ESC warning lamp may also illuminate
- ABS may be disabled leading to reduced braking performance under hard stops
- ABS/traction control may behave erratically
- Possible speedometer or cruise control anomalies (on some vehicles)
- Code returns intermittently or after driving through water/debris
What to check
- Check ABS/traction control warning lights and freeze-frame data with a scan tool
- Visually inspect rear right wheel area: sensor, tone ring, hub and bearing for damage or contamination
- Inspect connector for corrosion, bent pins, water ingress, or loose fit
- Follow wiring from sensor to ABS module and look for chafing, crushed areas, or broken insulation
- Back-probe connector and check for reference voltage, signal, and ground
- Measure sensor resistance (for passive sensors) or supply voltage (for active sensors)
Signal parameters
- Passive (magnetic) sensor resistance typically: ~800–2000 Ω (manufacturer-specific)
- Passive sensor AC output while wheel is rotated: >0.5 V AC at low speed and increases with speed
- Active (Hall/effect) sensor: reference supply commonly 5 V (or 12 V on some systems) and ground; signal is square/pulse 0–5 V (or 0–12 V) proportional to wheel speed
- Signal frequency should increase smoothly with wheel rotation; no dropouts or noise spikes
- No continuity to ground/vehicle chassis from the signal conductor (except ground return where expected)
Diagnostic algorithm
- Connect a scan tool, read ABS codes and freeze frame data. Note if other wheel sensors or communications codes are present.
- Clear the code and perform a short test drive or spin wheel to see if C1352 returns to confirm fault behavior.
- Visually inspect the rear right hub, sensor, and tone ring for physical damage, debris, or missing teeth.
- Inspect the sensor connector for corrosion, moisture, or bent pins; disconnect, clean, and reconnect firmly.
- With ignition ON, back-probe the sensor connector: verify reference voltage (if active), ground continuity, and signal while rotating wheel. Compare to expected signal parameters.
- For passive sensors, measure resistance with an ohmmeter; compare to spec. For active sensors, verify reference supply and measure output waveform (oscilloscope recommended) while spinning wheel.
- Perform a wiggle test on wiring harness while monitoring live data to locate intermittent opens/shorts.
- Check continuity from sensor ground to chassis ground and continuity of signal return to ABS module pin. Repair any open or shorted wires.
- Inspect/replace damaged tone ring or clean off heavy rust/magnetic debris that can mask signal.
- If wiring, connector, or sensor is repaired/replaced, clear codes and test drive to confirm no return of C1352.
- If sensor, wiring, and tone ring are good and signal tests are within spec, consider ABS module input fault — consult vehicle-specific diagnostics for module testing or replacement.
Likely causes
- Damaged or contaminated sensor
- Corroded/loose connector or pin
- Broken/chafed wiring between sensor and ABS module
- Damaged or missing tone/reluctor ring
- Poor ground at sensor circuit
Fault status
Status
Stored when the ABS control module detects an open, short, or implausible signal from the rear right wheel speed sensor circuit.
Repair difficulty: Medium
Diagnostic time: 0.5-3 hours
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