ABS Control Module Communication Error
The C0002 code means the vehicle's onboard diagnostic system has detected: ABS Control Module Communication Error. This is a critical severity code.
- Keep driving?
- No -- stop driving
- DIY difficulty
- hard
- Estimated cost
- $400 - $1400 (parts and labor)
Basic scanners cannot read ABS codes. BlueDriver reads all systems including ABS, SRS, and transmission through your phone.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Basic scanners cannot read ABS codes. This one reads all four systems so you know exactly which sensor failed.
Check Price on AmazonAffiliate link -- we earn a commission at no extra cost to you.
Common Symptoms
- ABS warning light on
- No communication with ABS module on scan tool
- Multiple warning lights on dashboard
- Traction control light illuminated
Probable Causes (Ranked by Likelihood)
- Failed ABS control module Very High
- Damaged CAN bus wiring to ABS module High
- Corroded ABS module ground connection Moderate
- Faulty ABS module power supply relay Low
Step-by-Step Diagnostic Procedure
-
Attempt to communicate with ABS module using scan tool
-
Check ABS module power and ground circuits
-
Inspect CAN bus wiring at ABS module connector
-
Test CAN bus communication lines for proper termination
Frequently Asked Questions
What causes an ABS communication error?
This code is typically caused by a failed ABS module, damaged CAN bus wiring, or a bad ground connection.
Is it safe to drive with C0002?
No. All ABS-related safety systems will be disabled. Have it towed to a repair shop.
Can a low battery cause C0002?
Yes, a severely low battery or failing alternator can cause communication errors with the ABS module.
Sources
This page is built from documented references. Verify against your own service info before repair work.
Explore More
Was this helpful?
Share carcodefinder.com with a friend who needs to decode their check engine light.