ABS Inlet Valve Coil RR Circuit Open

What is C1255?

C1255 indicates an open circuit in the ABS inlet valve coil for the rear right wheel, meaning the ABS system cannot properly control brake pressure to that wheel. This is a high-severity issue that disables ABS and stability control, creating a safety risk. Based on real data, this code primarily affects Chevrolet Corvettes and is often triggered by electrical faults or module failures.

Common Causes

• ●Electrical gremlins or intermittent faults that may resolve after multiple starts, as mentioned by owners describing known issues.
• ●A faulty Electronic Brake Control Module (EBCM), which owners specifically identified as a known problem requiring fuse removal to bypass.
• ●Wiring or connection issues in the ABS circuit, inferred from repairs involving brake line installation and electrical troubleshooting.

Symptoms You May Notice

• ●ABS warning light illuminated on the dashboard, disabling the anti-lock braking system.
• ●Potential loss of traction control or stability control, as the ABS system is compromised.
• ●No noticeable drivability issues in some cases, with the code appearing without obvious performance changes.

How to Fix It

• ●Replace the Electronic Brake Control Module (EBCM), which is a known failure point but can be expensive and complex.
• ●Clear codes and update software modules, as some fixes involved techs updating software and clearing codes.
• ●Install new brake lines or repair wiring, as owners reported bending and installing new brake lines during fixes.
• ●Replace the battery or address electrical power issues, with multiple owners installing new batteries costing $115-$150.
• ●Pull ABS and TCM fuses to disable the system temporarily, a workaround mentioned by owners but not a permanent repair.