Chassis, generic

C0515 Right Rear Wheel Speed Sensor A Circuit High

Check engine lightOn

EmissionsNot relevant

Drive cycleNot required

Limp modePossible

C0515 says the right rear sensor circuit draws or sees too much. GM's 2025 tables bundle four ASIC flags under this code: high-side current above 40 mA, high side shorted to battery, low-side overcurrent and, perhaps unexpectedly, a low side shorted to ground; each sets it after 100 ms as Type A. The 2023 tables keep it simpler: 50 mA exceeded for 0.12 s in the signal wire. Mitsubishi's C1067-12 equals C0515 and is described as a short circuit found within one second. GM's Silverado EV bulletin 24-NA-125 lists C0515 among the codes caused by the ABS harness touching the rear drive unit. A sensor shorted inside its housing is the other common source of overcurrent.

Likely causes

Insulation damage in the right rear harness causing a short

Right rear sensor shorted internally

Sensor supply stage in the brake module defective

Symptoms

ABS and stability lamps on as soon as the self-test ends
Stability and traction control unavailable

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

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