C1112 – OBD-II DTC

OBD-II DTC C1112 – ABS Power Relay Coil Short Circuit To Ground

DTC C1112 meaning

DTC C1112 refers to a diagnostic trouble code indicating a short circuit to ground in the ABS power relay coil. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle systems for faults. The ABS (Anti-lock Braking System) power relay is crucial for the operation of the ABS module, and a short circuit can prevent the system from functioning properly.

DTC C1112 symptoms

Common symptoms associated with DTC C1112 may include:

• Illumination of the ABS warning light on the dashboard
• Loss of ABS functionality, leading to potential braking issues
• Increased stopping distances during hard braking
• Possible activation of the traction control warning light

DTC C1112 causes

Several factors can lead to the occurrence of DTC C1112, including:

• Faulty ABS power relay
• Wiring issues, such as damaged or frayed wires
• Corrosion or poor connections in the electrical system
• Short circuits in the ABS module or related components
• Faulty ABS control module

DTC C1112 seriousness

DTC C1112 is considered a serious issue because it directly affects the ABS system’s ability to function. The ABS is critical for maintaining vehicle control during emergency braking situations. If the ABS is disabled, the vehicle may experience wheel lock-up, leading to loss of control and increased risk of accidents.

How to diagnose DTC C1112

To diagnose DTC C1112, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1112 code.
2. Inspect the ABS power relay for any visible signs of damage or corrosion.
3. Check the wiring and connectors associated with the ABS power relay for shorts or breaks.
4. Test the ABS power relay using a multimeter to ensure it operates correctly.
5. Examine the ABS control module for faults or internal failures.

How to fix DTC C1112 step-by-step instructions

To fix DTC C1112, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors related to the ABS power relay.
3. Replace the ABS power relay if it is found to be faulty.
4. Check the ABS control module for any issues and replace it if necessary.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test drive the vehicle to ensure the ABS system is functioning correctly and the warning lights do not reappear.

How to erase DTC C1112

To erase DTC C1112, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to verify that the code does not return.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.