OBD Guide
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C1566

Left Rear Ride Height Level Performance

C1566 is an OBD-II diagnostic trouble code meaning: Left Rear Ride Height Level Performance. Common causes: level sensor fault, broken or damaged wiring harness. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Uneven body height
  • Illuminated check engine light
  • Hard suspension operation
  • Unstable handling

Causes

  • Level sensor fault
  • Broken or damaged wiring harness
  • Air leak in air suspension
  • Problems with the suspension control unit

How to Fix

  1. Check the condition of the level sensor and its fastening
  2. Check the wiring and contacts of the sensor
  3. Check for air leaks in the air suspension system
  4. Replace the sensor if necessary

Related codes

C1565C1567C1570

FAQ

What does the C1566 code mean?

C1566 is an OBD-II diagnostic trouble code that indicates: Left Rear Ride Height Level Performance

What causes a C1566 error code?

The most common causes of C1566 include: Level sensor fault; Broken or damaged wiring harness; Air leak in air suspension; Problems with the suspension control unit.

How do I fix a C1566 diagnostic trouble code?

To fix C1566: Check the condition of the level sensor and its fastening. Check the wiring and contacts of the sensor. Check for air leaks in the air suspension system. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1566?

Limited driving only, diagnose soon

How much does it cost to fix C1566?

The estimated repair cost for C1566 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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