C1704 Lincoln Code - Parking Aid Right Rear Outer Sensor Fault
Quick Answer
The parking aid system detects objects behind the vehicle when the vehicle is in REVERSE. Common causes include Faulty Parking Aid Right Rear Outer Sensor, Parking Aid Right Rear Outer Sensor harness is open or shorted, Parking Aid Right Rear Outer 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
- C1704 Lincoln indicates Parking Aid Right Rear Outer Sensor Fault.
- Common causes
- Common causes include Faulty Parking Aid Right Rear Outer Sensor, Parking Aid Right Rear Outer Sensor harness is open or shorted, Parking Aid Right Rear Outer 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 C1704 Lincoln Description
The parking aid system is enabled when the ignition switch is in the RUN position and REVERSE is selected. The system can be disabled through the message center RESET switch located in the instrument cluster. The parking aid menu is displayed until the transmission is taken out of REVERSE. While the menu is displayed, pressing the message center RESET switch changes the parking aid system status to OFF.
The parking aid system is disabled if a fault is detected in 1 of the 4 sensors, the parking aid speaker, or the parking aid module. This will be indicated by the parking aid disabled warning CHECK BACKUP AID displayed in the message center. The parking aid module is on the International Standards Organization (ISO) 9141 network and can be diagnosed with a diagnostic tool.
What are the Possible Causes of the DTC C1704 Lincoln?
- Faulty Parking Aid Right Rear Outer Sensor
- Parking Aid Right Rear Outer Sensor harness is open or shorted
- Parking Aid Right Rear Outer Sensor circuit poor electrical connection
How to Fix the DTC C1704 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 C1704 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 C1704 Lincoln Code
1. What does the OBDII code C1704 mean on a Lincoln?
C1704 indicates a Parking Aid Right Rear Outer Sensor Fault, meaning the vehicle's parking assist system has detected an issue with the right rear outer sensor.
2. What are the symptoms of a C1704 code?
Common symptoms include the parking assist system not working, warning lights or alerts on the dashboard, or inconsistent beeping when reversing.
3. What causes the C1704 code to appear?
The code can be caused by a faulty sensor, damaged wiring or connectors, dirt or debris obstructing the sensor, or a software issue in the parking aid module.
4. How can I test the right rear outer sensor for a C1704 fault?
You can inspect the sensor for physical damage or debris, clean it, and use a multimeter to check for proper voltage and continuity in the wiring.
5. Can I drive with a C1704 code on my Lincoln?
Yes, the vehicle is drivable, but the parking assist system may not function properly, increasing the risk of collision when reversing.
6. How do I fix the C1704 code on my Lincoln?
Start by cleaning the sensor and checking for physical damage or loose wiring. Replace the sensor or repair the wiring if necessary. If the issue persists, the parking aid module may need attention.
7. How much does it cost to fix a C1704 code?
Replacing a parking sensor can cost $100-$300, depending on the model and labor rates. Wiring or module repairs may increase the cost.
8. Can a dirty sensor trigger the C1704 code?
Yes, dirt, mud, or snow can block the sensor, causing it to malfunction and trigger the fault code.
9. Do I need a professional to fix the C1704 code?
While cleaning or inspecting the sensor is easy to do yourself, diagnosing wiring or module issues may require professional tools and expertise.
10. Will resetting the code fix the C1704 issue?
Resetting the code without addressing the underlying issue will not permanently fix the problem, and the code is likely to return.
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