C2416 – Left motor circuit open or short (Hyundai)

Hyundai-specific code — factory diagnostic data

C2416 means the Hyundai Tucson has lost reliable control of a “left motor” circuit, so stability control and ABS functions may reduce or shut off. You may notice warning lights and changed brake feel during hard stops. According to Hyundai factory diagnostic data, this code indicates a left motor circuit open or short, reported by the ABS/ESP (Anti Lock Brake/Electronic Stability Program) module. This is a manufacturer-specific Hyundai code, so the exact motor and wiring path can vary by platform and option content. Treat the code as a direction to test a circuit, not permission to replace parts.

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C2416 Quick Answer

C2416 on Hyundai points to an open circuit or short in the left motor circuit monitored by the ABS/ESP module. Start with connector and harness checks at the ABS/ESP unit and the left-side motor circuit, then confirm with electrical tests before replacing anything.

What Does C2416 Mean?

Official definition (Hyundai): “Left motor circuit open or short.” In plain terms, the ABS/ESP module commanded or monitored a left motor circuit and saw an electrical fault. That fault prevents normal current flow, so the module limits ABS/traction/stability functions to protect the system.

What the module actually checks: the ABS/ESP module watches the motor driver circuit for expected electrical behavior when it commands the motor on and off. It looks for signs of an open circuit (no current flow) or a short (current path to ground or power). The FTB subtype matters here. FTB -13 follows SAE J2012DA wording and points most strongly to an Open Circuit direction for troubleshooting, even though the text still says “open or short.” Why that matters: you must prove wiring integrity and load capability first, because an “open” often comes from terminal tension, corrosion, or a broken conductor under the insulation.

Theory of Operation

On Hyundai vehicles, the ABS/ESP module manages brake pressure control during ABS and stability events. It does this by driving internal components and monitoring electrical feedback. Under normal operation, commanded motor activity produces predictable circuit behavior, and the module confirms it in real time.

C2416 sets when the module cannot see the expected electrical response on the left motor circuit. An open circuit blocks current flow, so the module sees no load when it expects one. A short creates an abnormal current path, so the module detects an implausible electrical condition and protects the driver circuit. Either condition forces the ABS/ESP module to reduce function, because it cannot guarantee controlled brake intervention.

Symptoms

C2416 typically shows up as a chassis warning with reduced stability and ABS support.

• Warning lights ABS and/or ESC indicators illuminated
• Driveability traction control or stability control reduced or disabled
• Brake feel ABS pulsing absent during a hard stop on low traction
• Message stability control warning message on the cluster (varies by Hyundai cluster)
• Stored codes additional ABS/ESP motor or power supply related DTCs may accompany it
• Intermittent behavior warning lights may clear then return after bumps or turning
• Self-test code may set shortly after key-on during ABS/ESP electrical checks

Common Causes

• Open in the left motor power feed: A break in the B+ supply path prevents current flow, so the ABS/ESP module flags an open circuit.
• Open in the left motor ground path: A broken ground wire or loose ground point stops the motor from completing the circuit under command.
• Short to ground on the left motor circuit: Chafed insulation can pull the circuit low and trigger an “open or short” electrical fault decision.
• Short to battery on the left motor circuit: A rubbed-through wire contacting a power source can backfeed the circuit and confuse module current monitoring.
• High resistance at a connector or splice: Corrosion or a loose terminal drops voltage under load and the module interprets the result as an open condition.
• Connector damage at the ABS/ESP module: Spread pins, water intrusion, or poor terminal tension interrupts motor control and feedback signals.
• Harness damage near moving or heat sources: Flexing and heat cycles near the engine bay or wheelhouse commonly break conductors inside intact insulation.
• Internal fault in the left motor assembly: An open winding or internal short changes current draw and sets a circuit DTC even when wiring looks normal.
• ABS/ESP module driver or current-sense fault: A failed output stage or sensing circuit can report an open/short while the external circuit tests good.

Diagnosis Steps

Use a scan tool that can access Hyundai ABS/ESP data, DTC details, and actuator tests. Have a DVOM, a fused test light, and back-probing leads. Plan to do voltage-drop testing with the circuit loaded. A wiring diagram and connector views for the Tucson platform speed up pin identification and prevent terminal damage.

1. Confirm C2416 in the ABS/ESP module and record status (pending, stored, confirmed). Save freeze frame data, since it shows when the fault set. For this circuit/open code, focus on battery voltage, ignition state, vehicle speed, and any related ABS/ESP DTCs. Clear codes and cycle the key once to see if the fault returns immediately, which often indicates a hard open or short.
2. Inspect the obvious circuit path before meter work. Check for damaged harness routing, rubbed insulation, crushed sections, and signs of water entry at connectors. Look closely where the harness bends or clips to brackets. If the scan tool shows an FTB suffix of -13, treat it as SAE J2012-DA subtype Open Circuit and prioritize finding a true open or high resistance first.
3. Check fuses and power distribution that feed the ABS/ESP hydraulic unit and motor circuit. Verify the correct fuses have power on both sides with the ignition state that powers ABS/ESP. Do not rely on a visual fuse check. If a fuse blows again, stop and find the short before replacing any components.
4. Verify ABS/ESP module power and ground integrity under load. Use voltage-drop testing while the module and system are awake. Aim for less than 0.1 V drop on grounds with the circuit operating. Test the main B+ feed drop to the module as well. A high-resistance connection can show full voltage unloaded and collapse under load.
5. Check scan tool data and run an actuator test if available for the motor circuit. Command the relevant motor test and watch system voltage and any motor current or “motor command” PIDs. If the command runs but the module reports “open,” you likely have a circuit interruption or a failed motor. If the command never initiates, confirm the module allows output tests and that no inhibit conditions exist.
6. Perform a loaded power/ground check at the left motor connector or at the closest accessible breakout point. Use a fused test light or an appropriate load tool in parallel with DVOM readings. Measure voltage drop from the power feed to battery positive and from ground to battery negative while commanding the motor. This test isolates weak terminals and corroded splices that continuity checks miss.
7. Key off and isolate the circuit as needed to prevent module damage during resistance checks. Check for opens end-to-end on each conductor between the ABS/ESP module connector and the left motor connector. Wiggle the harness while monitoring the meter to catch intermittent opens. Then check for shorts to ground and shorts to power on each conductor. Repair any chafing, pinched sections, or contamination you find.
8. Inspect terminals with discipline. Look for spread pins, backed-out terminals, fretting, and moisture tracks. Compare terminal drag or tension side-to-side if the connector uses similar cavities. Repair terminal fit issues instead of forcing the connector back together. Terminal tension problems often act like an “open” when vibration increases.
9. If wiring and terminals pass, evaluate the motor assembly electrically. Check motor winding resistance relative to a known-good reference when available. Also check for isolation to housing if the design allows. A winding open or internal short can set C2416 without any external harness damage.
10. Consider module driver diagnosis only after the circuit passes loaded tests. If power, ground, wiring, and motor all verify, suspect an ABS/ESP internal driver or current-sense fault. Confirm by repeating the loaded tests at the module connector, not just downstream. If results differ between the module connector and the motor connector, the harness still contains the problem.
11. Confirm the repair. Clear DTCs, run the same actuator test, and perform a road test in a safe area. Recheck for pending versus confirmed codes. Remember the difference between freeze frame and a scan tool snapshot. Freeze frame captured the original fault conditions, while a snapshot can catch an intermittent drop during your test drive.

Professional tip: Treat FTB -13 as a high-value clue for an open circuit, not a parts verdict. Use a fused test light to load the circuit at multiple points. Voltage-drop under command will expose a “good continuity” wire with broken strands. That method also protects you from chasing false opens caused by module sleep states.

Possible Fixes

• Repair or replace damaged wiring in the left motor circuit, then secure routing to prevent repeat chafing.
• Clean, tighten, and protect ground points or power distribution connections after proving excessive voltage drop.
• Repair connector issues, including terminal replacement for poor tension, corrosion, or water intrusion.
• Replace the left motor assembly only after loaded power/ground and control-side tests prove the motor has an internal open or short.
• Replace or service the ABS/ESP module only after verifying the external circuit and motor, and after confirming a driver or sensing fault.
• Restore blown fuse protection only after locating and correcting the root-cause short that caused the failure.

Can I Still Drive With C2416?

You can usually drive a Hyundai Tucson with C2416, but you should treat it as an ABS/ESC capability loss until you prove otherwise. This Hyundai manufacturer-specific chassis code indicates the ABS/ESP module detected an electrical fault in the left motor circuit. The SAE J2012-DA FTB subtype -13 points to an open circuit pattern, not a confirmed failed motor. When ABS/ESC detects a motor circuit open or short, it commonly disables stability control, traction control, and ABS modulation. Normal base braking often remains, but the vehicle can skid easier in panic stops or slick conditions. Avoid aggressive driving, keep extra distance, and schedule diagnosis soon. If the brake warning turns on, the pedal feel changes, or braking becomes inconsistent, stop driving and inspect immediately.

How Serious Is This Code?

C2416 ranges from inconvenient to safety-relevant based on what functions the ABS/ESP module disables. If only the ABS/ESC lamps stay on and braking feels normal, you mainly lose anti-lock and stability assistance. That still raises risk during emergency maneuvers or on wet roads. If the module sees a hard short, it may protect itself and shut down more functions. Some Hyundais also reduce engine torque intervention when ESC faults set. Treat any loss of ABS/ESC as serious in poor weather, heavy traffic, or towing. This code does not prove the left motor itself failed. It proves the module detected an electrical condition outside its expected range. Confirm power, ground, and circuit integrity before any parts decision.

Common Misdiagnoses

Technicians often replace the “left motor” component without proving the circuit fault. C2416 can set from a spread terminal, water in a connector, or harness chafe near the hydraulic unit. Another common mistake involves ignoring the FTB suffix. With FTB -13, the pattern matches an open circuit, so chasing a short-to-power first wastes time. Many DIY owners also clear the code and assume it fixed itself. The ABS/ESP module usually re-tests the motor circuit quickly and resets the DTC. Avoid guessing by doing loaded voltage-drop tests at the ABS/ESP connector, then confirming continuity and isolation on the left motor circuit. Also verify the module powers and grounds under load, since low supply can mimic an open circuit signature.

Most Likely Fix

The most common confirmed repair directions for Hyundai C2416 involve restoring circuit integrity, not immediately replacing the hydraulic unit. First, technicians frequently find poor pin fit, corrosion, or water intrusion at the ABS/ESP actuator connector that opens the left motor circuit under vibration. Second, harness damage close to the ABS/ESP assembly can pull a conductor open inside the insulation. After repair, verify the fix by clearing codes and performing a controlled road test that allows ABS/ESC self-checks to run. The exact enable criteria vary by Hyundai platform and calibration. Use service information to confirm when the ABS/ESP module runs its motor circuit diagnostics and when it flags the DTC as passed.

Repair Costs

Repair cost depends on whether the confirmed root cause is a sensor, wiring, connector issue, or control module problem. Verify the fault electrically before replacing parts.

Last updated: April 10, 2026

Definition source: Hyundai factory description · Autel MaxiSys Ultra & EV. Diagnostic guidance is based on factory-defined fault logic for this code.