C0605ABS / Stability

Internal Control Module Read Only Memory (ROM) Error

C0605 indicates an internal control module ROM (read only memory) error. The module has detected corrupt internal memory and disabled its functions, usually requiring a reflash or replacement.

🚗 Yes, but ABS and stability control are likely disabled, so fix it promptly.

HIGH

severity

🎯 Top Causes, Ranked by Likelihood

#1Internal module memory fault$400-$1200

45%

Corrupt ROM inside the control module.

#2Software or reflash needed$0-$200

25%

A failed or interrupted update corrupted memory.

#3Low or unstable voltage$100-$300

20%

Voltage problems during operation corrupt memory access.

#4Poor ground connection$20-$200

10%

A bad ground disrupts module operation.

🩺 Common Symptoms

ABS warning light on
Traction and stability control lights on
Systems disabled
Code returns after clearing

💰 Repair Cost: DIY vs Shop

DIY Cost

$20-$400

Shop Cost

$150-$1200

📋 Free OBD2 Code Cheat Sheet

The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.

🔧 How to Diagnose C0605

1Scan and record all module codes

2Check battery voltage and module grounds

3Attempt a module reflash with factory software

4Replace the module if the reflash does not clear the fault

❓ Frequently Asked Questions

Can I drive with C0605?

Yes, normal braking works, but ABS and stability control are likely off. Fix it soon.

How much to fix C0605?

A reflash may be inexpensive, but a module replacement can run $400-$1200.

What causes C0605 most often?

Corrupt internal module memory, often needing a reflash or module replacement.

🔗 Related Codes

C0550C0800C0561C0121