C1165 Lincoln Code - Right Rear 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 Rear Wheel Speed Sensor, Right Rear Wheel Speed Sensor harness is open or shorted, Right Rear 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
- C1165 Lincoln indicates Right Rear Wheel Speed Sensor Input Circuit Failure.
- Common causes
- Common causes include Faulty Right Rear Wheel Speed Sensor, Right Rear Wheel Speed Sensor harness is open or shorted, Right Rear 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 C1165 Lincoln 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 C1165 Lincoln?
- Faulty Right Rear Wheel Speed Sensor
- Right Rear Wheel Speed Sensor harness is open or shorted
- Right Rear Wheel Speed Sensor circuit poor electrical connection
How to Fix the DTC C1165 Lincoln?
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 C1165 Lincoln 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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Frequently Asked Questions about C1165 Lincoln Code
1. What does the OBDII code C1165 mean for a Lincoln vehicle?
C1165 indicates a "Right Rear Wheel Speed Sensor Input Circuit Failure," meaning there is an issue with the signal from the right rear wheel speed sensor to the ABS module.
2. What are the common symptoms of the C1165 code?
Common symptoms include the ABS warning light being illuminated, reduced or disabled ABS functionality, traction control system issues, and potentially erratic braking performance.
3. What causes the C1165 code to appear?
The code can be triggered by a faulty right rear wheel speed sensor, damaged wiring or connectors, a bad ABS module, or issues with the sensor’s tone ring.
4. How is the C1165 code diagnosed?
A mechanic will use a scan tool to confirm the code, inspect the right rear wheel speed sensor and its wiring for damage, check the tone ring for debris or misalignment, and test the sensor's electrical output.
5. Can I drive my Lincoln with the C1165 code active?
While the vehicle may still be drivable, the ABS and traction control systems may not function properly, increasing the risk of losing control during hard braking or slippery conditions.
6. How do you fix the C1165 code on a Lincoln?
Fixes may include replacing the right rear wheel speed sensor, repairing or replacing damaged wiring or connectors, cleaning or replacing the tone ring, or addressing ABS module issues.
7. How much does it cost to fix the C1165 code?
Repair costs can vary but typically range from $100 to $300, depending on whether the issue is with the sensor, wiring, or other components.
8. Can a dirty tone ring cause the C1165 code?
Yes, dirt, debris, or rust on the tone ring can interfere with the wheel speed sensor’s ability to detect wheel movement, triggering code C1165.
9. How do I reset the C1165 code after repairs?
After fixing the issue, use an OBDII scan tool to clear the code. If the problem is resolved, the code should not return.
10. What happens if I ignore the C1165 code?
Ignoring the code can lead to compromised braking performance, increased wear on braking components, and potential safety issues due to disabled ABS and traction control systems.
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