Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC C0090: Right Rear Abs Solenoid No. 1 Circuit Malfunction
The ABS control module controls valve function by grounding the solenoid circuit when necessary. Solenoids No. 1 are outlet valves. DTC will set if ABS control module detects an open, short to ground or short to voltage on solenoid circuit(s) inside control module. If this condition is present, ABS indicator light will illuminate, BRAKE indicator light will illuminate, ABS is disabled and Dynamic Rear Proportioning (DRP) will only be functional on one rear wheel. If a left rear solenoid or left rear wheel speed DTC sets with DTC C0080, the DRP is disabled. Replace ABS control module as necessary.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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