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 C110A: Testing
If any other DTCs are present (except B1342), diagnose those DTCs first. This DTC is used for aftermarket equipment (like an engine braking device) and indicates that there is a concern in the aftermarket equipment. When in use, this circuit (pin-14 of the ABS module electrical connector) informs the aftermarket equipment that an ABS event is in progress.
If the vehicle is equipped with aftermarket equipment, VERIFY that those systems are functioning correctly. ISOLATE the aftermarket equipment and CARRY OUT the ABS module self-test. If the DTC does not return, the concern is in the aftermarket equipment. If the DTC returns or if the vehicle is not equipped with any aftermarket equipment, DISCONNECT the ABS module electrical connector and INSPECT the connector for corrosion, water intrusion and other contamination. If contamination is present, CLEAN or REPAIR the connector as necessary. CLEAR the DTC. REPEAT the self-test.
If no contamination is present, CLEAR the DTC and REPEAT the self-test. If the DTC returns, INSTALL a new ABS MODULE Using the scan tool, CARRY OUT the IVD Initialization sequence. CLEAR the DTC. REPEAT the self-test.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.