C1707 Code: Meaning, Symptoms, Causes & Fix

Overview

Code C1707 indicates a fault in Left Rear Center Sensor Circuit Fault, typically within ABS/chassis dynamics and brake control.

Symptoms

longer braking intervention
ABS/traction light on
chassis warning indicator

Common causes

Broken terminal inside harness affecting left rear center sensor circuit fault
Disconnected or loose connector
Connector pin damage/corrosion or harness stress near related components

How to diagnose C1707

Confirm C1707 and capture freeze-frame data with a professional scan tool.
Inspect wiring, connectors, and grounds related to left rear center sensor circuit fault for obvious defects.
Use a continuity test from module pin to component to identify opens/high resistance.
Check for related DTCs to identify the root-cause chain before replacing parts.
After repair, clear codes and confirm readiness monitors complete without recurrence.

Severity of code C1707

Moderate: This code is moderate severity: the vehicle may still operate, but fault progression can increase repair cost over time.

Can you drive with C1707?

Most vehicles can be driven short-term with C1707, but postpone heavy load/highway driving until repaired.

If the warning lamp is flashing or drivability/safety is affected, avoid driving and diagnose immediately.

How to fix it (step-by-step)

Repair obvious wiring/connector faults first to prevent repeat parts replacement.
Address the root fault mode (open) in the left rear center sensor circuit fault circuit/system.
Apply the required relearn/adaptation procedure if specified by service information.
Road-test and verify C1707 remains cleared under the conditions that originally set the code.

Fix options

Restore continuity and verify pin tension.
Repair open circuit and secure connector lock.
Clear DTCs and verify with live data and completed drive cycle.

Typical repair cost

$240-$1200

Common mistakes when diagnosing C1707

Replacing parts without verifying voltage, ground, and signal integrity first.
Ignoring related stored/pending codes that indicate upstream faults.
Skipping post-repair verification drive cycle and readiness checks.

C1707 in common vehicles

C1707 appears across makes such as Mazda, Subaru, Lexus, Jeep. Failure patterns differ by platform: wiring routes, software calibration, and component supplier revisions can change root cause.

Frequently asked questions

What causes C1707?

C1707 is commonly set by open faults affecting left rear center sensor circuit fault.

How much does it cost to fix C1707?

For C1707, repair costs are typically $240-$1200 depending on exact root cause, labor rates, and part quality.

Can I clear C1707 without repair?

You can clear C1707 temporarily, but the code usually returns until the underlying fault is corrected.