C0365

Code

Generic C — Chassis

Right Rear Wheel Speed Sensor Circuit

Brand: Generic

Type: C — Chassis

Views: UK: 5 EN: 9 RU: 8

AI status

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Page language: EN

Causes

Damaged or failed right rear wheel speed sensor (passive or active type)
Open, shorted, or corroded sensor wiring or connector
Contaminated, broken or missing tone/ring/reluctor on the wheel/hub
Wheel/hub bearing or mounting damage causing sensor misalignment
Poor sensor ground or supply voltage problem
Intermittent connection due to chafed wiring or damaged insulation

Symptoms

ABS and/or traction/stability control warning lamp illuminated
Loss of ABS/traction control functionality for affected wheel
No wheel speed reading or erratic speed value for right rear in live data
Possible erroneous braking or stability intervention (rare)
DTC stored and may reappear after clearing if fault persists

What to check

Read all stored ABS and related codes with a capable scan tool; record freeze frame and live data
Visually inspect right rear sensor, tone ring, and wiring harness for damage, corrosion, or contamination
Unplug sensor connector and inspect pins for corrosion, bent pins, or water intrusion
Measure sensor resistance (if passive type) with multimeter and compare to spec
Backprobe sensor power/ground lines (if active type) to verify supply/reference voltage with ignition on
Spin wheel and observe wheel speed channel in scan tool; check for signal while spinning

Signal parameters

Passive (variable-reluctance) sensors: DC resistance usually tens to a few thousand ohms depending on vehicle — check OEM spec; generate AC voltage when wheel spins (low speed ~0.1–1.0 VAC, increasing with speed up to several volts AC)
Active/Hall-effect sensors: typically produce a square wave TTL signal referenced to vehicle system (0–5 V or 0–12 V depending on circuit). Expect a clean square wave with frequency proportional to wheel speed
At rest: passive sensor shows some resistance; active sensor may have a reference voltage (commonly 5 V) on one pin and a switched output on the signal pin
Waveform: clean sinusoidal (passive) or clean square pulses (active) without dropouts; no excessive noise or offset
If available, compare right rear waveform to a known-good wheel (same vehicle side/type) for amplitude and frequency

Diagnostic algorithm

Verify code: connect scan tool, confirm C0365 and any related codes; record live right rear wheel speed data and freeze frame.
Visual inspection: inspect sensor, harness routing, connector and tone ring for physical damage, contamination, or missing teeth.
Check connector: disconnect sensor, look for corrosion, bent pins, water, or debris; clean and reconnect or replace connector if needed.
Resistance test (passive): measure sensor resistance between signal and ground; compare to manufacturer spec. Open or infinite = failed sensor/wiring.
Voltage/reference check (active): backprobe connector with ignition ON; verify reference voltage and ground on appropriate pins.
Signal test while spinning: with wheel off ground and safe supports, spin wheel. Monitor live data or use oscilloscope to verify waveform and amplitude.
Wiggle test: wiggle wiring and connectors while observing live data/waveform to find intermittent faults.
Tone ring and bearing: inspect and repair/replace damaged tone ring or worn hub/bearing that misaligns the sensor.
Repair: repair wiring (splices, replace sections), replace sensor, clean/replace connector, or replace tone ring/hub as required. Ensure correct sensor type.
Clear codes and road test: after repair, clear codes and perform road test while monitoring wheel speed values to confirm repair.
If problem persists: check ABS module connector/power/ground and communication lines; consider module diagnosis or replacement if wiring and sensor verify good.

Likely causes

Connector corrosion or wiring open to the right rear sensor
Failed wheel speed sensor
Damaged or missing tone/reluctor ring on the hub
Intermittent harness damage (chafed by suspension or axle)

Fault status

⚠️ Status

Right Rear Wheel Speed Sensor Circuit — ABS module is not receiving a valid wheel speed signal from the right rear sensor (open, short, intermittent, or out-of-range).

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours