OBD Guide
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C1903

Ride Control Right Rear Shock Actuator Circuit Short To Battery

C1903 is an OBD-II diagnostic trouble code meaning: Ride Control Right Rear Shock Actuator Circuit Short To Battery. Common causes: wiring harness damage, shock absorber solenoid malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • Unstable suspension operation
  • Reduced driving comfort
  • Suspension fault light is on

Causes

  • Wiring harness damage
  • Shock Absorber Solenoid Malfunction
  • Problem in the suspension control unit
  • Short circuit to power

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the resistance of the shock absorber solenoid
  3. Check for short circuit to power
  4. Replace solenoid or wiring harness if necessary
  5. Reflash the control unit (if required)

Related codes

C1900C1901C1902

FAQ

What does the C1903 code mean?

C1903 is an OBD-II diagnostic trouble code that indicates: Ride Control Right Rear Shock Actuator Circuit Short To Battery

What causes a C1903 error code?

The most common causes of C1903 include: Wiring harness damage; Shock Absorber Solenoid Malfunction; Problem in the suspension control unit; Short circuit to power.

How do I fix a C1903 diagnostic trouble code?

To fix C1903: Check the integrity of the wiring harness. Check the resistance of the shock absorber solenoid. Check for short circuit to power. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1903?

Limited driving only, diagnose soon

How much does it cost to fix C1903?

The estimated repair cost for C1903 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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