C1145 Code - Right Front Wheel Speed Sensor Input Circuit Failure
Quick Answer
The ABS module receives wheel speed readings from each wheel speed sensor and processes this information to determine if an ABS event is necessary. Common causes include Faulty Right Front Wheel Speed Sensor, Right Front Wheel Speed Sensor harness is open or shorted, Right Front Wheel Speed Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- C1145 indicates Right Front Wheel Speed Sensor Input Circuit Failure.
- Common causes
- Common causes include Faulty Right Front Wheel Speed Sensor, Right Front Wheel Speed Sensor harness is open or shorted, Right Front Wheel Speed Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code C1145 Description
The active wheel speed sensor generates a signal that is sent to the ABS module. The wheel speed sensor circuitry connects to the ABS module through 2 wires and a connector at each wheel speed sensor. When the ignition is turned to the RUN position, the ABS module carries out a self-test by sending a reference voltage to all of the wheel speed sensors through their circuitry to determine if they are functional.
The ABS module continuously monitors and compares the rotational speed of each wheel and when it detects an impending wheel lock, modulates brake pressure to the appropriate brake caliper. This is accomplished by triggering the hydraulic control unit (HCU) to open and close the appropriate solenoid valves. Once the affected wheel returns to normal speed, the ABS module returns the solenoid valves to their normal position and normal (base) braking resumes.
What are the Possible Causes of the DTC C1145?
- Faulty Right Front Wheel Speed Sensor
- Right Front Wheel Speed Sensor harness is open or shorted
- Right Front Wheel Speed Sensor circuit poor electrical connection
How to Fix the DTC C1145?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the C1145 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Makes
- C1145 Ford — Right Front Wheel Speed Sensor Input Circuit Failure
- C1145 Infiniti — YAW Rate Sensor
- C1145 Jaguar — Right Front Wheel Speed Sensor Input Circuit Failure
- C1145 Lincoln — Right Front Wheel Speed Sensor Input Circuit Failure
- C1145 Mercury — Right Front Wheel Speed Sensor Input Circuit Failure
- C1145 Nissan — YAW Rate Sensor
Frequently Asked Questions about C1145 Code
1. What are the common symptoms of OBDII code C1145 (Right Front Wheel Speed Sensor Input Circuit Failure)?
- Common symptoms include the ABS warning light illuminating on the dashboard, traction control system malfunctions, and potential loss of ABS functionality.
2. What are the possible causes of OBDII code C1145?
- The code C1145 can be triggered by a faulty right front wheel speed sensor, damaged wiring or connectors in the sensor circuit, or issues with the ABS module.
3. How can I diagnose the cause of OBDII code C1145?
- Diagnosis typically involves checking the right front wheel speed sensor for damage or corrosion, inspecting the wiring and connectors for any issues, and using a diagnostic tool to scan for fault codes.
4. Can I continue driving with OBDII code C1145 present?
- It is not recommended to continue driving with code C1145 as it may affect the proper functioning of the ABS system, potentially compromising vehicle safety.
5. How can I repair OBDII code C1145?
- Repairing code C1145 may involve replacing the right front wheel speed sensor, repairing damaged wiring or connectors, or reprogramming the ABS module if necessary.
6. Are there any DIY tips for troubleshooting OBDII code C1145?
- DIY tips include visually inspecting the right front wheel speed sensor and its wiring for any visible damage, checking for loose connections, and cleaning connectors before considering replacement.
7. Will resetting the fault codes make OBDII code C1145 go away?
- Resetting the fault codes may temporarily clear the code, but it is important to diagnose and address the underlying issue to prevent the code from reoccurring.
8. Is it necessary to visit a mechanic for OBDII code C1145 repair?
- While some DIY troubleshooting may be possible, it is recommended to consult a qualified mechanic for a proper diagnosis and repair of OBDII code C1145 to ensure the ABS system's safety and functionality.
9. Can extreme weather conditions cause OBDII code C1145 to trigger?
- Yes, extreme weather conditions such as water ingress, extreme cold, or excessive heat can potentially damage the wheel speed sensor or its circuit, leading to the triggering of code C1145.
10. How much does it cost to repair OBDII code C1145?
- The cost of repairing code C1145 can vary depending on the extent of the issue, the parts needed for replacement, and labor costs. It is advisable to get a quote from a mechanic for an accurate estimate.
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