C0598 — Brake System Control Module B Performance

What Does C0598 Mean?

C0598 is a diagnostic trouble code indicating: Brake System Control Module B Performance. This code relates to the chassis system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

Symptoms of C0598

⚠️ Check Engine Light (MIL) illuminated
⚠️ Brake System Control Module B not meeting expected output
⚠️ Degraded performance of related system
⚠️ ABS or stability control warning light

Common Causes

🔍 Brake System Control Module B degraded from age or contamination
🔍 Mechanical wear in Brake System Control Module B or related parts
🔍 Restriction or blockage affecting Brake System Control Module B
🔍 Calibration drift in Brake System Control Module B

Frequently Asked Questions

What does C0598 mean?

C0598 indicates: Brake System Control Module B Performance. The vehicle's computer has detected that the Brake System Control Module B is not operating within its expected parameters and stored this diagnostic trouble code.

Can I drive with code C0598?

Only short distances if absolutely necessary. C0598 affects a critical system and should be diagnosed within a few days to avoid further damage.

How much does it cost to fix C0598?

Repair costs for C0598 typically range from $50 to $400, depending on the root cause. Simple wiring or connector repairs are on the lower end, while component replacement costs more. A proper diagnosis ($80–$150 at most shops) will identify the exact cause before committing to expensive parts.

What To Do Next

Possible Fixes

🔧 Inspect Brake System Control Module B for contamination or wear
🔧 Replace Brake System Control Module B
🔧 Address any related mechanical faults

1
Find your vehicle above
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

C0598: Brake System Control Module B Performance