C112A on 2016-2020 Mazda CX-5 (Touring, Grand Touring, Signature) — Incorrect Electric Parking Brake Motor Gear Unit Position
1 vehicles · 1 makes · $150-$900 repair
Most Reported On
C112A is an OBD-II diagnostic trouble code meaning “Incorrect Electric Parking Brake Motor Gear Unit Position.” Manufacturer-specific chassis code, documented for Mazda electric parking brake (EPB) systems. The ABS/EPB control module monitors the position of the parking brake motor gear unit as the brake applies and releases, and has determined the gear unit is not where it should be. The parking brake may fail to apply or release fully, and the parking brake warning light will usually be on. Treat this as a safety item - do not rely on the parking brake to hold the vehicle until it is repaired. This code is most commonly reported on 2016-2020 Mazda CX-5 (Touring, Grand Touring, Signature), with repair costs ranging from $150 to $900.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
C112A does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does C112A mean?
C112A stands for "Incorrect Electric Parking Brake Motor Gear Unit Position." Manufacturer-specific chassis code, documented for Mazda electric parking brake (EPB) systems. The ABS/EPB control module monitors the position of the parking brake motor gear unit as the brake applies and releases, and has determined the gear unit is not where it should be. The parking brake may fail to apply or release fully, and the parking brake warning light will usually be on. Treat this as a safety item - do not rely on the parking brake to hold the vehicle until it is repaired.
What are the most common causes of C112A?
The most common causes of C112A are: Failed electric parking brake motor / caliper actuator on one rear wheel, Open or shorted wiring in the EPB motor circuit, Poor or corroded connection at the EPB motor connector, Seized caliper or worn rear brake pads preventing the gear unit reaching its expected position, EPB system left out of calibration after rear brake service performed without using service/maintenance mode. The specific cause varies by vehicle.
How much does it cost to fix C112A?
Repair costs for C112A range from $150 to $900, depending on the vehicle and root cause.
Which vehicles are affected by C112A?
Au7o has documented C112A across 1 vehicle models from 1 manufacturers: Mazda.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.