C1113 — ABS Power Relay Coil Short Circuit To Battery #

The wording of this code can vary depending on the vehicle manufacturer (OEM). Always refer to your specific service manual for the exact description.

• ABS Power Relay Coil Short to Battery (Generic/OEMs)
• ABS Pump Relay Circuit High (Nissan/Infiniti)
• ABS Relay Control Circuit Shorted (Ford)
• ABS System Power Relay Coil Short to B+ (Hyundai/Kia)
• ABS Relay Coil Short Circuit (Toyota/Lexus)

Summary of Code C1113 #

The C1113 code indicates that the Anti-lock Braking System (ABS) control module has detected a short circuit between the power relay coil and the battery voltage (often referred to as “B+”). The ABS Power Relay is an electromechanical switch that supplies electrical power to the ABS pump motor or control module when activated. A short circuit to battery suggests that the relay coil, which is supposed to be energized only by the control module, is receiving power directly or is otherwise exposed to battery voltage. This can disrupt the ABS’s ability to function properly, potentially affecting braking performance and vehicle safety. Addressing this code promptly is crucial for safe driving.

Frequent Symptoms for Code C1113 #

When the C1113 code triggers, you may notice changes in your vehicle’s braking behavior or warning indicators on your dashboard. These symptoms may be subtle at first but can escalate if left unresolved. Here are the most common signs:

• ABS warning light illuminated on the dashboard
• General brake warning light may also come on
• Loss of ABS function — brakes may lock under hard braking
• Traction control or stability control lights may activate
• Possible failure to communicate with ABS module during scan tool diagnostics
• Noticeable changes in braking performance (in rare cases)

Common Causes for Code C1113 #

Several components and wiring issues can trigger the C1113 code. The most frequent causes involve electrical faults or relay failures. Understanding the root causes helps prioritize your diagnostic approach:

1. Faulty ABS power relay — relay internal coil is shorted or stuck
2. Short circuit in wiring harness — damaged, pinched, or corroded wires between relay and ABS control module
3. Corrosion or contamination at relay terminals or fuse box
4. Water intrusion in the relay area (common in engine bay fuse boxes)
5. Faulty ABS control module (rare, but possible)
6. Incorrect relay installation or use of non-OEM parts

Step-by-Step Diagnostic Procedure for Code C1113 #

Diagnosing C1113 requires a methodical approach to avoid misdiagnosis or unnecessary part replacements. Always prioritize safety and follow these steps:

1. Verify the code with a professional-grade scan tool and clear it to see if it returns.
2. Visually inspect the ABS relay, its socket, and related wiring for obvious damage, corrosion, or water.
3. Test the relay: Remove and bench test the ABS power relay for coil continuity and check for internal shorts (across coil terminals with an ohmmeter).
4. Check the wiring harness between the relay and ABS control module for shorts to battery voltage using a multimeter.
5. Inspect the fuse box and relay contacts for contamination, oxidation, or signs of moisture ingress.
6. If all above components check out, use the scan tool’s live data or bi-directional controls to command the relay and observe responses.
7. As a last step, consider the possibility of a faulty ABS control module, but only after ruling out all other causes.

Possible Repairs for Code C1113 #

Repairs for C1113 target the specific root cause identified during diagnosis. Always use OEM quality parts and follow best practices:

• Replace the ABS power relay if found faulty or shorted
• Repair or replace damaged wiring harnesses — including corroded or melted wires
• Clean and protect relay socket and terminals from corrosion
• Address water leaks or sources of moisture in the fuse/relay box area
• Replace the ABS control module (only if thoroughly proven faulty)
• Install the correct OEM relay if an incorrect or aftermarket relay was previously fitted

Can You Drive with Code C1113? #

Limited: While it is often possible to continue driving with code C1113 present, your ABS and potentially traction/stability control systems will be disabled. This means your brakes can lock up during emergency stops, especially on slippery surfaces, increasing the risk of losing control. For your safety, drive with extra caution and have the issue repaired as soon as possible. Do not ignore this code!

Vehicles Most Commonly Affected by Code C1113 #

The C1113 code can appear on a wide range of vehicles that use ABS with relay-controlled power supplies. It is especially common in certain makes and models due to relay or harness design. Vehicles frequently reporting this code include:

• Nissan Altima, Maxima, Rogue, Pathfinder (2010s)
• Infiniti G35, G37, QX60, FX35
• Hyundai Sonata, Elantra, Tucson
• Kia Optima, Sorento
• Toyota Camry, Corolla, RAV4 (early 2000s/2010s)
• Ford Focus, Fusion, Escape (various years)

Common Mistakes & Best Practices with Code C1113 #

Misdiagnosing C1113 is not uncommon. Avoid unnecessary repairs and delays by following these tips:

• Do not replace the ABS module before testing the relay and wiring
• Always inspect for water damage in and around fuse boxes and relay sockets
• Use only OEM relays; aftermarket options may not meet specifications
• Verify wire integrity with both visual inspection and multimeter testing
• Clear the code after every repair and confirm it does not return before closing the job

FAQ for Code C1113 #

Here are quick answers to some of the most common questions about C1113:

• Q: Can I just swap the relay to fix C1113?
  A: Sometimes, yes—if the relay is the root cause. However, always check for wiring shorts or water damage as well, since these are often involved.
• Q: Will my brakes still work if C1113 is present?
  A: Yes, your basic brakes will work, but the ABS function that prevents wheel lockup is disabled. Exercise caution, especially in wet or slippery conditions.
• Q: Can a dead battery trigger C1113?
  A: Not directly. This code specifically relates to a short circuit in the relay coil or wiring, not low voltage or battery failure.