What Does C1215 Mean?
The ABS module has detected an open circuit in the right front (RF) inlet valve solenoid coil. The electrical path through the coil is broken, preventing the ABS module from controlling brake pressure application on the right front wheel during ABS events. ABS is fully disabled and the ABS warning light is on.
Common Causes
35%
Internally broken RF inlet valve solenoid coil winding inside the ABS hydraulic modulator
30%
Broken wire or disconnected conductor in the harness for the RF inlet valve circuit
25%
Backed-out or corroded terminal at the modulator connector on the RF inlet valve circuit pins
10%
ABS module internal open on the RF inlet valve driver output circuit
Diagnostic Steps
1
Disconnect the ABS modulator connector. Measure RF inlet valve solenoid coil resistance across the designated pins (spec: 3-6 ohms). An OL/infinity reading confirms a broken coil.
2
If the coil reads within specification, check continuity on each RF inlet valve wire from the ABS module connector to the modulator connector. An open reading points to a broken wire.
3
Inspect both connectors for backed-out pins, bent terminals, or corrosion. Use a terminal release tool to extract suspect pins and verify their condition.
4
If the solenoid coil is confirmed open, the ABS hydraulic modulator must be replaced. The solenoids are not individually serviceable.
5
After installation, perform a full ABS system bleed using the factory scan tool procedure, clear codes, and road test to confirm proper function.
Estimated Repair Cost
$150 - $1,200
Parts + labor, varies by vehicle and location
The ABS module has detected an open circuit in the right front (RF) inlet valve solenoid coil. The electrical path through the coil is broken, preventing the ABS module from controlling brake pressure application on the right front wheel during ABS events. ABS is fully disabled and the ABS warning l...
The most common cause of C1215 (ABS Inlet Valve Coil RF Circuit Open) is: Internally broken RF inlet valve solenoid coil winding inside the ABS hydraulic modulator
Typical repair costs for C1215 range from $150 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Standard braking is fully functional. ABS is disabled, which means the right front wheel may lock during emergency braking, reducing steering authority and potentially pulling the vehicle to the right. Schedule the repair promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1215 to identify the root cause.
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Quick Info
Category
Chassis
System
ABS / Traction Control
Difficulty
Type
Manufacturer
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