The OBD code C1223 for Toyota indicates a fault in the AntiLock Brake System (ABS) Module.
Symptoms include the ABS Warning Light and Engine Light being illuminated.
This is commonly caused by a faulty ABS Module, open/shorted harness, or poor electrical connection.
It is a serious issue affecting vehicle safety.
To fix, inspect and repair any damaged components, wiring harness, or connectors related to the ABS Module.
Repair Importance Level | 10.0 (Out of 10) |
Estimated Repair Time | Approximately 1.0 hour |
Repair Difficulty Level | 10.0 (Out of 10) |
Symptoms of the Toyota c1223 OBD Code
The vehicle may exhibit issues with the ABS system due to fault code C1223.
- Symptoms: AntiLock Brake System (ABS) Warning Light ON.
- Engine Light ON (or Service Engine Soon Warning Light).
- Possible loss of AntiLock Brake System (ABS) functionality.
- Brake pedal may feel different than usual.
- Unusual noises coming from the ABS system.
Causes of the Toyota c1223 OBD Code
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Possible triggers for Toyota C1223 include ABS control module malfunctions and faulty wheel speed sensor readings.
- C1223 can be caused by a faulty AntiLock Brake System (ABS) Module.
- An open or shorted AntiLock Brake System (ABS) Module harness.
- Poor electrical connection in the AntiLock Brake System (ABS) Module circuit.
- Faulty wheel speed sensors.
- Broken connectors in the ABS system.
- Low voltage in the ABS system.
- Corroded grounds affecting the ABS system.
- Signal loss between the ABS Module and other vehicle systems.
Fixing Toyota Error Code c1223 Step By Step
Resolve the Toyota C1223 code by inspecting the ABS control module and related wiring for faults.
- To fix Toyota OBDII code C1223, start by reviewing the possible causes mentioned above and visually examining the corresponding wiring harness and connectors.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Next, perform a thorough inspection of the ABS actuator assembly and skid control ECU.
- Ensure all connections are secure and free of corrosion.
- If no issues are found with the wiring or connectors, consider resetting the skid control ECU to clear any stored fault codes.
- If the problem persists, it may be necessary to replace the ABS actuator assembly or skid control ECU to resolve the C1223 fault code.
Cost Of Fixing Toyota c1223 Fault Code
The repair for Toyota fault code C1223 typically involves diagnosing and fixing issues with the ABS system.
The cost to diagnose and fix Toyota OBD code C1223 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
The final cost depends on shop rates, complexity of the issue, and any additional parts or labor needed for the repair.
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Details of the Toyota c1223 OBD Code
Toyota fault code C1223 relates to a malfunction in the ABS control system.
OBD code C1223 for Toyota means that there is a problem with the ABS control system.
This code is triggered by the ABS actuator relay circuit.
The ABS control system is involved in monitoring and controlling the antilock braking system to prevent wheel lockup during braking.
Mechanic’s Tech Notes
For Toyota C1223, this section provides detailed diagnostic information for the ABS Control System Malfunction.
To diagnose and fix OBDII code C1223 in a Toyota, start by checking the ABS control module power and ground using a voltmeter.
Verify communication between the ABS module and other modules over the CAN network using a scan tool.
If communication issues are found, reprogramming or reflashing the ABS module may be necessary.
Visually inspect the wiring harness and connectors for any damage, and ensure connector pins are not broken, bent, or corroded.
This thorough inspection will help identify and address any underlying issues causing the C1223 fault code.
FAQ
Common symptoms of OBD code C1223 in a Toyota: ABS Warning Light ON, Engine Light ON. Causes: Faulty ABS Module, harness issues. Fix: Inspect and repair wiring connections and components.
OBD code C1223 in a Toyota is typically caused by a faulty ABS module, open/shorted harness, or poor electrical connection. Inspect and repair affected components as needed.
Diagnose and repair OBD code C1223 in a Toyota: Symptoms are ABS and Engine lights ON. Causes include faulty ABS module or harness issues. Inspect and repair wiring and connectors.

Wrap Up
If your Toyota is displaying OBD code C1223, you may experience issues with the ABS system, such as the ABS warning light being illuminated on the dashboard.
This code typically indicates a problem with the ABS control module, wheel speed sensors, or the wiring connecting these components.
To address Toyota OBD code C1223, start by inspecting the wiring harness and connectors related to the ABS control module and wheel speed sensors.
Look for any signs of damage, corrosion, or loose connections.
Test the wheel speed sensors for proper operation and replace any faulty components as needed to resolve the ABS system issue