C1748 Mercury Code - Switch Input Circuit Short To Ground
Quick Answer
The parking aid system is enabled when the ignition switch is in the RUN position and the transmission is in REVERSE. Common causes include Faulty Parking Aid Switch, Parking Aid Switch harness is open or shorted, Parking Aid Switch 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
- C1748 Mercury indicates Switch Input Circuit Short To Ground.
- Common causes
- Common causes include Faulty Parking Aid Switch, Parking Aid Switch harness is open or shorted, Parking Aid Switch 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 C1748 Mercury Description
What are the Possible Causes of the DTC C1748 Mercury?
- Faulty Parking Aid Switch
- Parking Aid Switch harness is open or shorted
- Parking Aid Switch circuit poor electrical connection
- Faulty Parking Aid Module
How to Fix the DTC C1748 Mercury?
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 C1748 Mercury 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 C1748 Mercury Code
1. What does the OBDII code C1748 mean on a Mercury vehicle?
C1748 indicates a "Switch Input Circuit Short To Ground," which means there is an electrical issue in the circuit related to a specific switch input.
2. What are the symptoms of code C1748 in a Mercury?
Symptoms may include malfunctioning vehicle systems controlled by the affected switch, warning lights on the dashboard, or erratic behavior of electronic components.
3. What causes code C1748 in a Mercury?
Common causes include damaged wiring, a shorted switch, corroded connectors, or a faulty control module in the impacted circuit.
4. Can I drive my Mercury with code C1748 present?
It is possible, but not recommended. The issue may cause certain systems to malfunction, potentially affecting safety or drivability.
5. How do I diagnose code C1748 on a Mercury?
Start by inspecting the wiring and connectors for damage or corrosion. Use a multimeter to check for shorts to ground in the circuit, and test the switch for proper function.
6. What repairs can fix code C1748 in a Mercury?
Repairs may include repairing or replacing damaged wires, cleaning or replacing corroded connectors, replacing the faulty switch, or addressing issues in the control module.
7. How much does it cost to fix code C1748 on a Mercury?
Costs vary depending on the root cause but may range from $50 to $300 for wiring or switch replacements, with higher costs if the control module needs replacement.
8. Can a blown fuse cause code C1748 in a Mercury?
Yes, a blown fuse can be a symptom or contributing factor if it’s part of the affected circuit. Check all related fuses during diagnosis.
9. What tools are needed to troubleshoot code C1748 on a Mercury?
You’ll need a diagnostic scanner, multimeter, wiring diagrams, and basic hand tools to inspect and test the circuit.
10. Can clearing the C1748 code solve the issue permanently?
Clearing the code will only reset the warning temporarily. The underlying issue must be diagnosed and repaired to prevent the code from returning.
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