Code C0125 on the 2022 Jeep Grand Cherokee signals a fault in the rear right ABS solenoid valve circuit. This valve is a critical component within the Integrated Power Brake (IPB) module or traditional ABS modulator, controlling brake pressure during anti-lock braking at the rear right wheel.
Grand Cherokee Braking Architecture
The 2022 Grand Cherokee may feature the new Integrated Power Brake system depending on configuration, combining the brake booster, master cylinder, and ABS modulator into one unit. The rear right solenoid valve controls brake pressure modulation to that wheel, working in concert with the other three wheel circuits to maintain vehicle stability during hard braking.
Fault Symptoms
With C0125 active, expect the ABS and Electronic Stability Control (ESC) warning lights to illuminate. The Grand Cherokee's normal braking remains functional, but the rear right wheel won't receive proper ABS pressure modulation during emergency stops. Off-road capability may be affected as well, since trail-rated systems rely on ABS for hill descent control.
Diagnostic Strategy
Investigate electrical causes first - connector issues, wiring damage, or module-level faults. The Grand Cherokee's dual-purpose design (on-road luxury and off-road capability) can expose brake components to harsh conditions. Check for mud or debris contamination around the ABS module. Verify the code using Stellantis-compatible diagnostic equipment with ABS module access.
Repair Requirements
External electrical faults may be repairable without major parts replacement. However, internal solenoid failure requires modulator or IPB unit replacement, which is a significant repair. Professional installation and brake system bleeding are essential, and module programming may be required on newer Grand Cherokee models.