C0178 critical

ABS Pump Motor Circuit Short to Battery

The C0178 code means the vehicle's onboard diagnostic system has detected: ABS Pump Motor Circuit Short to Battery. This is a critical severity code.

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Keep driving?: Short distances only
DIY difficulty: hard
Estimated cost: $200 - $1200 (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
No ABS pump operation during braking
Traction control disabled
Possible burning smell from ABS module

Probable Causes (Ranked by Likelihood)

Failed ABS pump motor Very High
Wiring fault in pump motor circuit High
Contaminated brake fluid affecting pump Moderate
EBCM pump motor driver failure Low

Step-by-Step Diagnostic Procedure

Listen for pump motor during ABS activation
Check pump motor connector for power and ground
Measure pump motor winding resistance
Inspect brake fluid for contamination

Frequently Asked Questions

What does code C0178 mean?

Code C0178 indicates abs pump motor circuit short to battery. This is a chassis-related diagnostic trouble code stored in your vehicle's on-board computer.

Can I drive with code C0178?

You can drive short distances to a repair shop, but the affected system is compromised. Avoid highways and harsh conditions.

How much does it cost to fix C0178?

Typical repair costs range from $200 - $1200 (parts and labor). The actual cost depends on the root cause, vehicle make and model, and local labor rates. Get a proper diagnosis before replacing parts.