OBD Guide
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C1905

Ride Control Left Rear Shock Actuator Circuit Failure

C1905 is an OBD-II diagnostic trouble code meaning: Ride Control Left Rear Shock Actuator Circuit Failure. Common causes: open or short circuit in wiring harness, damage actuator malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Deterioration in ride comfort
  • Unstable suspension operation
  • Check Engine or Suspension System Light Illuminates

Causes

  • Open or short circuit in wiring harness
  • Damage actuator malfunction
  • Problems with the suspension control unit
  • Contact corrosion

How to Fix

  1. Check wiring harness for damage
  2. Check actuator resistance
  3. Check power and ground on the actuator
  4. Replace the actuator if necessary
  5. Clean contacts from corrosion

Related codes

C1900C1906C1910

FAQ

What does the C1905 code mean?

C1905 is an OBD-II diagnostic trouble code that indicates: Ride Control Left Rear Shock Actuator Circuit Failure

What causes a C1905 error code?

The most common causes of C1905 include: Open or short circuit in wiring harness; Damage actuator malfunction; Problems with the suspension control unit; Contact corrosion.

How do I fix a C1905 diagnostic trouble code?

To fix C1905: Check wiring harness for damage. Check actuator resistance. Check power and ground on the actuator. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1905?

Limited driving only, diagnose soon

How much does it cost to fix C1905?

The estimated repair cost for C1905 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat