C0075 critical

ABS Motor Relay Circuit Malfunction

The C0075 code means the vehicle's onboard diagnostic system has detected: ABS Motor Relay Circuit Malfunction. This is a critical severity code.

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Keep driving?: Short distances only
DIY difficulty: hard
Estimated cost: $150 - $800 (parts and labor)

Read ABS Codes

BlueDriver Bluetooth Pro Scanner

Basic scanners cannot read ABS codes. BlueDriver reads all systems including ABS, SRS, and transmission through your phone.

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Read ABS Codes

LAUNCH CRP123X (Reads ABS + Chassis)

Basic scanners cannot read ABS codes. This one reads all four systems so you know exactly which sensor failed.

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Common Symptoms

ABS warning light on
Traction control light illuminated
ABS pump motor not activating
Longer stopping distances on slippery surfaces
Stability control warning message

Probable Causes (Ranked by Likelihood)

Failed ABS motor relay Very High
ABS pump motor failure High
Corroded relay connector at ABS module Moderate
ABS control module internal fault Low

Step-by-Step Diagnostic Procedure

Scan ABS module for DTCs
Test ABS motor relay with multimeter
Check power supply and ground at ABS motor relay
Test ABS pump motor with direct power
Inspect wiring between relay and ABS hydraulic unit

Frequently Asked Questions

Is it safe to drive without ABS?

You can drive, but braking performance on slippery surfaces will be reduced. Without ABS, wheels can lock up during hard braking, increasing stopping distances and reducing steering control.

What does the ABS motor relay do?

The ABS motor relay supplies power to the ABS hydraulic pump motor. When ABS activation is needed, the relay energizes the pump to modulate brake pressure at each wheel.

Can I replace the ABS relay myself?

On some vehicles, the relay is a separate replaceable component. On others, it is integrated into the ABS module, requiring more extensive disassembly or module replacement.