C1708 — Right Rear Center Sensor Circuit Short to Vbat #

Note: The exact definition of DTC C1708 may vary across vehicle manufacturers. Always refer to OEM (Original Equipment Manufacturer) documentation for model-specific details.

• Right Rear Center Sensor Circuit Short to Battery Voltage (Nissan, Infiniti)
• Rear Center Right Sensor Circuit High Input (Toyota, Lexus)
• Rear Center Sensor Circuit Voltage High (Hyundai, Kia)

Summary of the C1708 Code #

The C1708 diagnostic trouble code (DTC) indicates that the vehicle’s onboard computer has detected an electrical issue in the right rear center sensor circuit, specifically a short to Vbat (vehicle battery voltage). This sensor is commonly part of a parking assistance or proximity sensor system. The “short to Vbat” phrase means the signal wire is receiving battery voltage when it should not, which can interfere with accurate sensor readings. This malfunction can affect the reliability of parking assistance or obstacle detection systems. Prompt attention is recommended to maintain safety features and avoid further electrical complications.

Common Symptoms for Code C1708 #

Drivers or technicians may notice several signs that suggest the presence of code C1708. While your vehicle may still operate, certain convenience or safety systems could be compromised. Typical symptoms include:

• Parking sensors fail to detect obstacles on the right rear side
• Warning lights or error messages related to parking assist appear on the dashboard
• Audible warnings from the parking assist system may sound continuously
• False alerts or the parking assist system being disabled
• Unusual clicking or buzzing sounds from the rear sensor area

Probable Causes for Code C1708 #

The root causes behind a C1708 code are typically electrical in nature. The most common issues, ranked in order of likelihood, are:

1. Damaged or shorted wiring in the right rear center sensor circuit
2. Faulty right rear center parking sensor
3. Corroded or loose electrical connector at the sensor or control module
4. Water intrusion or physical damage to the sensor or its harness
5. Defective parking assist control module (rare)

Step-by-Step Diagnosis for Code C1708 #

To accurately diagnose C1708, a systematic approach is essential. This helps avoid unnecessary part replacements and ensures the true fault is addressed:

• Visual Inspection: Examine the right rear center sensor and harness for physical damage or corrosion.
• Check Connectors: Disconnect and inspect connectors for bent pins, moisture, or loose fit.
• Test Sensor: Use a multimeter to measure resistance and check for a short between the signal wire and battery voltage.
• Inspect Wiring: Follow the harness route, looking for pinched, chafed, or exposed wires that could cause a short to Vbat.
• Scan for Additional Codes: Some faults may trigger multiple DTCs—record and address them as needed.
• Swap Components (if possible): If the sensor is suspected, swap it with another of the same type to confirm the fault moves or remains.
• Check Control Module: If wiring and sensor are fine, test or substitute the parking assist control module as a last step.

Possible Repairs for Code C1708 #

Once the cause of C1708 is identified, repairs should directly address the issue found. Here are common solutions linked to each probable cause:

• Repair or replace damaged wiring: Fix shorts by splicing or replacing affected wires within the sensor circuit.
• Replace faulty sensor: Install a new right rear center parking sensor if the original is defective.
• Clean or re-secure connectors: Remove corrosion, dry moisture, and ensure tight, secure connections.
• Fix or replace harness: Address any water entry or significant damage to the wiring harness.
• Replace control module: If all else fails, and module diagnostics confirm failure, install a new parking assist control module.

Is It Safe to Drive with Code C1708? #

Yes, but with limitations. The C1708 code typically does not affect essential driving systems like steering, braking, or engine performance. However, your parking assist or proximity warning features may not function correctly, increasing the risk of parking mishaps. Exercise extra caution when maneuvering in tight spaces or rely on manual observation until the issue is resolved. Prompt repair is recommended to restore all safety features.

Vehicles Most Commonly Affected by Code C1708 #

Based on field reports and OEM documentation, C1708 is most often seen in modern vehicles equipped with advanced parking assist systems, including:

• Nissan Altima, Maxima, Pathfinder (2010–present)
• Infiniti Q50, QX60 (2013–present)
• Toyota Camry, Highlander, RAV4 (2012–present)
• Lexus RX, ES series (2013–present)
• Hyundai Santa Fe, Tucson (2014–present)
• Kia Sorento, Sportage (2015–present)

Common Mistakes & Best Practices for Code C1708 #

Misdiagnosis is not uncommon with electrical sensor codes like C1708. Avoid these pitfalls and follow these best practices:

• Replacing the sensor without checking wiring or connectors first
• Ignoring signs of water damage or corrosion near the sensor
• Clearing the code before verifying the actual repair
• Overlooking related codes that may provide additional context
• For best results, always follow OEM diagnostic procedures and use proper tools (like a digital multimeter and scan tool)

Quick FAQ for Code C1708 #

Still have questions about C1708? Here are quick answers to the most common concerns:

Q: Will resetting the code fix the problem?
A: No. The code will return unless the underlying electrical fault is repaired.

Q: Can a car wash cause this code?
A: Yes, if water enters a damaged sensor or connector, it can cause a short and trigger code C1708. Always check for water intrusion if the code appeared after exposure to moisture.

Q: Does this code mean my entire parking assist system is broken?
A: Not necessarily. Often, only one sensor or its circuit is affected—other sensors may still function normally, but the system may disable itself as a precaution.