Chassis, generic

C0514 Right Rear Wheel Speed Sensor A Circuit Low

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modePossible

C0514 reports the right rear sensor circuit below its valid range. GM's 2025 EBCM tables (25OBDG04A) show how broadly that is read: the Polaris ASIC raises an open-sensor bit when the high-side current drops under 3.5 mA, and a separate bit for a low side shorted to ground, both after 100 ms as Type A; the listed suspects run from sensor and harness to the printed circuit board and the ASIC. GM's 2023 tables also file signal patterns under C0514 that fit neither a known electrical fault nor a valid signal. On the 2024 Silverado EV, bulletin 24-NA-125 ties the code to a harness worn through on the rear drive unit. Mitsubishi's C1067-11 adds the parking brake warning lamp.

Likely causes

Harness worn through and grounded near the rear axle or drive unit
Right rear sensor defective
Brake module circuit board or ASIC faulty (GM lists it)

Symptoms

  • ABS lamp and service stability message
  • Electric parking brake warning on some models (Mitsubishi)
  • ABS and stability control switched off

Repair estimate

DifficultyMediumDIY possible
Parts and labour€20–450
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

wss rrsensor wiring

Related codes

C0512C0513C0515C0516C0517C050EC003B

References: gsi.ext.gm.com, gsi.ext.gm.com, static.nhtsa.gov, mitsubishitechinfo.com.