C2232

Code

Generic C — Chassis

Right Rear Wheel Speed Sensor Circuit Intermittent

Brand: Generic

Type: C — Chassis

Views: UK: 13 EN: 17 RU: 14

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Page language: EN

Causes

Damaged or failing right rear wheel speed sensor (VR or Hall type)
Broken, frayed or chafed wiring in the sensor harness
Corroded, loose or contaminated connector at the sensor or ABS module
Damaged/dirty tone ring (reluctor) or missing teeth on the wheel/axle
Poor ground or power supply to the sensor
Intermittent short to battery or ground in the circuit

Symptoms

ABS warning lamp illuminated
Traction control / ESC / stability control warning lamp illuminated or systems disabled
Inconsistent or no speed reading for right rear wheel in live-data/scan tool
ABS activation, unexpected braking feel, or wheel lock/unlock events
Occasional intermittent faults that clear and return (codes set as intermittent)
Possible speedometer or shift logic issues on some vehicles if vehicle speed signal is affected

What to check

Read freeze frame and all stored ABS/traction codes with a diagnostic scan tool
Check live-data wheel speed readings for all four wheels while turning wheels by hand and during a low-speed road test
Perform a visual inspection of right rear sensor, tone ring, wheel bearing and mounting area for damage, debris or missing reluctor teeth
Inspect the sensor connector for corrosion, bent pins, water ingress and secure locking
Wiggle the harness and connector while watching live data to reproduce the intermittent behavior
Check sensor mounting (looseness or incorrect air gap) and tone ring alignment

Signal parameters

Sensor types: passive (VR/magnetic) or active (hall/namur) — confirm type for vehicle
Typical passive VR sensor: DC resistance commonly ~500–2000 Ω (varies by maker); produces AC waveform whose peak voltage increases with wheel speed (tens of millivolts at low speed to >1 Vp-p at higher speeds); frequency proportional to wheel speed
Typical active (Hall/linear) sensor: expects 5 V reference and ground; outputs square wave or pulsed 0–5 V (or 0.5–4.5 V) with frequency scaling to speed
Expected behavior: clean, continuous waveform without dropouts. Intermittent code often shows missing pulses, irregular amplitude, or loss of reference/ground

Diagnostic algorithm

Connect a full-function scan tool, read all ABS/traction codes and freeze-frame data. Note whether the code is recorded as intermittent and any related codes.
Inspect sensor and tone ring visually. Clean any heavy rust/debris and look for missing teeth or heavy scoring. Repair or replace damaged tone ring or hub as required.
With ignition on, backprob the sensor connector: verify reference voltage (if active sensor), ground continuity, and signal output while spinning the wheel by hand. Compare to known good values for vehicle/type.
For passive sensors measure resistance across sensor leads; compare to specification. Also use an oscilloscope or AC voltmeter while spinning wheel: look for a clean sine/AC waveform that increases with speed. For active sensors check for square-wave output with scan tool or scope.
Wiggle the harness, flex suspension and connectors while monitoring live-data or scope for dropouts to reproduce intermittent condition. Repair broken wires, secure harness away from pinch/abrasion points.
Check continuity from sensor connector to ABS module pin for open/short and verify module connector pins and grounds are clean and secure.
If wiring and connectors test good but signal is intermittent, replace the wheel speed sensor. If problem remains after sensor and tone ring replacement, inspect ABS module inputs and grounds; consider module or wiring harness repair.
After repairs clear codes, perform a road test with live-data to confirm the right rear wheel speed signal is stable and the code does not return.