OBD-II trouble code
C0075: Right Front ABS Solenoid #2 Circuit Malfunction
The ABS module detected a fault in the right front ABS solenoid #2 (outlet/dump valve) circuit. ABS, traction, and stability control are disabled, but your normal (base) brakes still work.
Quick facts
- System
- Chassis
- Category
- ABS / Hydraulic
- Severity
- High severity
- Drivable
- Usually safe to drive short-term
- Repair cost range
- $250 – $1,000
- DIY difficulty
- Advanced DIY
What does C0075 mean?
Each wheel circuit in the anti-lock brake hydraulic unit uses a pair of solenoid valves to modulate brake pressure during ABS, traction control, and stability control events. Solenoid #2 is the outlet (dump/release) valve, which lets pressure out of that wheel's brake back toward the reservoir, working in tandem with solenoid #1, the inlet (isolation) valve that holds or blocks pressure. The electronic brake control module (EBCM) supplies these valves battery voltage and controls each by grounding its circuit. C0075 sets when the module sees that the right front solenoid #2 circuit is not responding as commanded — the circuit is open, shorted, or drawing current outside the expected range.
With the right front outlet valve circuit in doubt, the module can no longer guarantee proper pressure control at that wheel, so it disables ABS, traction control, and stability control and lights the corresponding warnings. Your standard hydraulic brakes still work — the pedal stops the car normally — but the electronically managed functions are offline until the circuit is repaired. Because those functions help most during hard or slippery stops, the code warrants prompt attention.
On virtually all modern vehicles the ABS solenoid valves are integral to the hydraulic control unit / EBCM and are not replaceable individually, so a confirmed internal valve or driver-circuit fault typically means replacing or rebuilding the module. First, though, verify the wiring, the main connector at the hydraulic unit, and the module's power and ground: a corroded terminal, chafed wire, or low system voltage can produce a solenoid-circuit code without any internal defect. C0075 is the right front mirror of the left front code C0065 and is common on GM vehicles, but valve numbering and assignments can differ by manufacturer, so confirm the definition in service data for your specific vehicle before replacing parts.
Common causes
- Failed internal right front #2 (outlet/dump) solenoid valve within the EBCM/hydraulic unit
- Corroded, loose, or damaged main connector at the hydraulic control unit
- Chafed, open, or shorted wiring in the solenoid circuit
- Low battery or system voltage affecting the module
- Corroded or high-resistance EBCM ground
- Faulty EBCM (internal valve-driver circuit failure)
Symptoms
- ABS warning light on
- Traction control and stability control (ESC) warning lights on
- ABS, traction, and stability features disabled
- Normal (base) braking still works
- Warning lights may be intermittent if the cause is a connection or voltage issue
Diagnostic steps
- 1.Scan the ABS module and record C0075 plus any companion solenoid or relay codes (C0070, C0065, C0121 often appear together).
- 2.Load-test the battery and confirm charging-system voltage — low voltage can trigger solenoid-circuit codes.
- 3.Inspect the main connector at the hydraulic control unit for corrosion, backed-out terminals, or moisture intrusion.
- 4.Perform voltage-drop tests on the EBCM power feed and ground, and check the ABS system fuse.
- 5.Clear the code and note whether it returns immediately or only intermittently; an intermittent set points to wiring/connection or voltage rather than the module.
- 6.If power, ground, connector, and wiring are all good and the code persists, the internal solenoid valve is the likely fault and the EBCM/hydraulic unit typically needs replacement or rebuild with programming.
Repair cost
$250 – $1,000
The ABS solenoid valves are integral to the hydraulic control unit / EBCM and are not serviceable individually, so a confirmed internal solenoid failure usually means module replacement or rebuild plus programming, commonly $400-$1,000 at a shop. Mail-in module rebuild services can lower the parts cost to roughly $150-$300. If the true cause is a corroded connector, damaged wiring, a bad ground, or low voltage, the repair is far cheaper — verify those first.
Estimate your repair
Run the numbers for your vehicle
Open the Repair Cost Estimator with abs module / ebcm replacement preselected. Adjust labor rate and vehicle category to fit your situation.
Related repairs
DIY vs shop
This is an advanced DIY job. It typically requires specialty tools, scan-tool access, lifting equipment, or careful sequencing to avoid causing new failures. Plan for extended downtime and have a backup vehicle. Most owners are better served by a shop that has done this repair before.