C1268 — Motor Relay #1 Circuit Failure #

Please note: The description of this DTC (Diagnostic Trouble Code) may vary depending on the vehicle manufacturer.
Known label variations:

• “Pump Motor Relay #1 Circuit Malfunction” (Toyota, Lexus)
• “ABS Motor Relay Circuit Fault” (Ford, Lincoln)
• “Primary Motor Relay Circuit Failure” (Nissan, Infiniti)
• “Brake System Relay 1 Circuit Error” (Hyundai, Kia)

Summary of the C1268 Code #

C1268 is a diagnostic trouble code that indicates a fault within the Motor Relay #1 circuit, typically associated with the ABS (Anti-lock Braking System) pump motor relay. When this circuit is compromised, the system may not be able to control the hydraulic pressure needed for effective ABS or stability control operation. The code is triggered when the Electronic Control Unit (ECU) detects an unexpected voltage or continuity issue in the relay circuit. This can be caused by electrical faults, component failures, or wiring problems. Although the code’s specifics may differ among OEMs (Original Equipment Manufacturers), the underlying issue remains a disruption in the relay’s intended function.

Common Symptoms for Code C1268 #

When your vehicle registers the C1268 code, it often manifests through both subtle and obvious symptoms. The most noticeable is usually a warning light on your dashboard, signaling an ABS or brake system concern. Depending on the vehicle, you may also lose certain advanced braking or stability features. These symptoms serve as the vehicle’s way of waving a red flag, alerting you to a potential safety risk.

• ABS warning light illuminated on the dashboard
• Traction control or stability control warning lights may be on
• Loss of ABS function (wheels may lock during hard braking)
• Intermittent or total loss of traction/stability assist
• Unusual clicking or buzzing from the ABS module area
• Brake pedal may feel harder or less responsive

Likely Causes of C1268 (by frequency) #

The C1268 code can have several origins, but some are more common than others. Most often, issues arise from electrical continuity problems, relay wear, or moisture intrusion. Understanding the hierarchy of likely causes can streamline your troubleshooting and ensure that you address the root of the problem rather than the symptom.

1. Failed or sticking ABS pump motor relay
2. Corroded, damaged, or loose wiring/connectors in the relay circuit
3. Faulty or degraded ABS pump motor
4. Blown fuse or poor ground connection related to the relay
5. Water ingress into the relay or ABS module
6. Internal fault in the ABS control module

Step-by-Step Diagnostic for C1268 #

Diagnosing a C1268 code is like following a detective’s trail, starting from the most probable culprits and moving toward less common scenarios. Careful, methodical work pays off, and skipping steps can mean missing a simple fix. Here’s an effective approach:

• Scan for additional DTCs and record freeze frame data for context.
• Inspect the ABS pump motor relay for signs of overheating, corrosion, or physical damage.
• Check the relay’s power supply and ground circuits using a digital multimeter.
• Test the relay operation by activating it via scan tool bi-directional controls (if available) or bench-testing it out of circuit.
• Examine wiring harnesses and connectors for broken wires, water ingress, or corrosion near the relay and ABS module.
• Verify the ABS pump motor’s resistance and inspect for signs of seizure or internal failure.
• Clear the code and road test to confirm repair, watching for code recurrence or new symptoms.

Possible Repairs for C1268 #

The repairs for C1268 will always depend on the root cause uncovered during diagnosis. Resist the temptation to replace parts blindly; a careful fix prevents repeat issues or unnecessary expense. Here are the most common corrective actions:

• Replace faulty ABS pump motor relay
• Repair or replace damaged wiring/connectors in the relay circuit
• Clean or reseal connectors to prevent future corrosion or water entry
• Replace the ABS pump motor if found defective
• Replace blown fuse and address root cause of failure
• In rare cases, replace the ABS control module (after confirming diagnosis)

Is It Safe to Drive with Code C1268? #

Driving with code C1268 is NOT recommended for extended periods, especially in adverse conditions. While your basic braking system usually remains functional, the loss of ABS and related stability features can significantly increase your stopping distance and reduce vehicle control during emergency maneuvers. If the warning lights are on, have your vehicle inspected and repaired as soon as possible to restore full braking safety.

Vehicles Most Commonly Affected by C1268 #

While C1268 can appear on many makes and models, it is most frequently reported in vehicles using advanced ABS modules and relay-driven hydraulic pumps—especially those from Japanese and Korean OEMs. Here are some commonly affected vehicles:

• Toyota Camry, Avalon, Prius, Highlander
• Lexus ES, RX, GS series
• Ford Fusion, Escape, Explorer
• Nissan Altima, Maxima, Murano
• Hyundai Sonata, Santa Fe
• Kia Optima, Sorento

Common Mistakes & Best Practices with C1268 #

When tackling a C1268 code, some missteps are all too common. By learning from the experience of other technicians and enthusiasts, you can avoid wasted time and money.

• Replacing the relay without inspecting wiring — Always check for corroded or loose connectors first.
• Ignoring signs of water intrusion — Moisture is a silent killer of relays and modules.
• Failing to check related fuses or grounds
• Overlooking service bulletins or recalls for known ABS relay issues
• Assuming the ABS module is bad when it’s often a relay or wiring issue

Quick FAQ for C1268 #

Q: Will replacing the relay always fix code C1268?
A: Not always. While a failed relay is common, wiring issues, blown fuses, or even ABS pump problems can also trigger this code. Always diagnose before replacing parts.

Q: Can I clear the code and keep driving?
A: Clearing the code without addressing the cause may temporarily turn off warning lights, but the issue will return—and your ABS or stability system will remain compromised until properly repaired.