What Does C1268 Mean?
The ABS module has detected a malfunction in the right rear outlet (dump) valve solenoid. This valve releases hydraulic pressure from the right rear brake during ABS cycling. A failure prevents pressure release, potentially causing the right rear wheel to lock during ABS-controlled braking events.
Common Causes
40%
Failed right rear outlet valve solenoid in the ABS hydraulic modulator
25%
Internal wiring or connection fault to the outlet solenoid driver circuit
20%
Contaminated or degraded brake fluid causing valve to stick
10%
ABS module electronic driver circuit failure
5%
Inadequate ABS module ground affecting solenoid drive current
Diagnostic Steps
1
Use bi-directional control to command the right rear outlet valve solenoid — listen for clicking at the ABS modulator to verify actuation.
2
Measure outlet solenoid resistance at the ABS module connector — expect 3-6 ohms. Out-of-range values indicate a failed solenoid coil.
3
Check ABS module power and ground connections. Measure voltage drop across the ground circuit under load — should be less than 100 mV.
4
Inspect brake fluid condition and moisture content. Flush the system with fresh DOT-rated fluid if contaminated or overdue for service.
5
If all electrical tests pass and fluid is fresh, the valve is mechanically seized. The ABS hydraulic modulator assembly needs replacement.
Estimated Repair Cost
$200 - $1,200
Parts + labor, varies by vehicle and location
The ABS module has detected a malfunction in the right rear outlet (dump) valve solenoid. This valve releases hydraulic pressure from the right rear brake during ABS cycling. A failure prevents pressure release, potentially causing the right rear wheel to lock during ABS-controlled braking events.
The most common cause of C1268 (Right Rear Outlet Valve Solenoid Malfunction) is: Failed right rear outlet valve solenoid in the ABS hydraulic modulator
Typical repair costs for C1268 range from $200 to $1,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The ABS cannot release pressure on the right rear brake during anti-lock operation. This could cause wheel lockup during hard braking on slippery surfaces. Normal braking is unaffected. Drive cautiously and avoid situations requiring ABS intervention until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to C1268 to identify the root cause.
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Quick Info
Category
Chassis
System
ABS / Traction Control
Difficulty
Type
Manufacturer
Recommended Tools
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