DTC P1A87 Cadillac
LEFT REAR WHEEL SPEED COMPARATIVE PERFORMANCE
LEFT REAR WHEEL SPEED COMPARATIVE PERFORMANCE
Description
With the ignition on. When the Left Rear Wheel Speed Sensor (WSS) reading is different from the readings received from the other sensors at a vehicle speed above 25 mph (40 km h). The Anti-Lock Brake Module compares WSS readings from side-to-side on an axle and front-to-rear
Cause and Solution
LEFT REAR WSS LOOSE - B3, B4 CIRCUITS CONNECTOR TERMINAL DAMAGEIMPROPER LEFT REAR TIRE PRESSURE MISMATCHED TIRESLEFT REAR TONE WHEEL DAMAGEAXLE SHAFT FASTENER HARDWARELEFT REAR WSSANTI-LOCK BRAKE MODULE
Video Guide
Diagnostic Info
- DTC Code: P1A87
- Brand: Cadillac